From 29d3a0f01663430d630dc95c588376ad74f3dc75 Mon Sep 17 00:00:00 2001
From: ericek111 <erik@brocko.eu>
Date: Sat, 24 Oct 2026 01:07:47 +0000
Subject: [PATCH] Name a monospace font list instead of the generic monospace

The generic name only resolves through fontconfig, so on Windows the
windows fell back to the proportional default.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
---
 src/Nonemm.App/Dialogs/MessagesDialog.axaml      |  3 ++-
 src/Nonemm.App/Theming/Fonts.cs                  | 12 ++++++++++++
 src/Nonemm.App/Windows/AvailableWindow.axaml.cs  |  3 ++-
 src/Nonemm.App/Windows/BandmapView.cs            |  3 ++-
 src/Nonemm.App/Windows/CallStackWindow.axaml.cs  |  3 ++-
 src/Nonemm.App/Windows/CheckWindow.axaml.cs      |  3 ++-
 src/Nonemm.App/Windows/DigitalWindow.Grab.cs     |  2 +-
 src/Nonemm.App/Windows/DigitalWindow.axaml       |  5 +++--
 src/Nonemm.App/Windows/DigitalWindow.axaml.cs    |  2 +-
 src/Nonemm.App/Windows/EntryWindow.axaml         | 11 ++++++-----
 src/Nonemm.App/Windows/GraylineView.cs           |  3 ++-
 src/Nonemm.App/Windows/LogWindow.axaml           |  9 +++++----
 src/Nonemm.App/Windows/NetworkStatusWindow.axaml |  9 +++++----
 src/Nonemm.App/Windows/QtcWindow.axaml.cs        |  2 +-
 src/Nonemm.App/Windows/ScoreWindow.axaml.cs      |  3 ++-
 src/Nonemm.App/Windows/StatisticsChart.cs        |  3 ++-
 src/Nonemm.App/Windows/StatisticsWindow.axaml    |  5 +++--
 src/Nonemm.App/Windows/TelnetWindow.axaml        |  3 ++-
 18 files changed, 55 insertions(+), 29 deletions(-)
 create mode 100644 src/Nonemm.App/Theming/Fonts.cs

diff --git a/src/Nonemm.App/Dialogs/MessagesDialog.axaml b/src/Nonemm.App/Dialogs/MessagesDialog.axaml
index 8cf0923..852f6d9 100644
--- a/src/Nonemm.App/Dialogs/MessagesDialog.axaml
+++ b/src/Nonemm.App/Dialogs/MessagesDialog.axaml
@@ -1,5 +1,6 @@
 <Window xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:theming="using:Nonemm.App.Theming"
         x:Class="Nonemm.App.Dialogs.MessagesDialog"
         Title="Function key messages" Width="620" Height="520"
         WindowStartupLocation="CenterOwner" KeyDown="OnKeyDown">
@@ -31,7 +32,7 @@
       <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
         <Grid>
           <StackPanel Name="Highlight" Margin="6,4" IsHitTestVisible="False" ZIndex="1" />
-          <TextBox Name="TextArea" AcceptsReturn="True" AcceptsTab="False" FontFamily="monospace"
+          <TextBox Name="TextArea" AcceptsReturn="True" AcceptsTab="False" FontFamily="{x:Static theming:Fonts.Mono}"
                    FontSize="12" Padding="6,4" TextWrapping="NoWrap" BorderThickness="0"
                    Background="Transparent" Foreground="Transparent"
                    VerticalContentAlignment="Top" />
diff --git a/src/Nonemm.App/Theming/Fonts.cs b/src/Nonemm.App/Theming/Fonts.cs
new file mode 100644
index 0000000..ee2c722
--- /dev/null
+++ b/src/Nonemm.App/Theming/Fonts.cs
@@ -0,0 +1,12 @@
+using Avalonia.Media;
+
+namespace Nonemm.App.Theming;
+
+public static class Fonts
+{
+    /// The generic name `monospace` only resolves through fontconfig, so on
+    /// Windows it falls back to the proportional default. Each family listed is
+    /// tried in order.
+    public static readonly FontFamily Mono = new(
+        "Cascadia Mono, Consolas, DejaVu Sans Mono, Liberation Mono, Courier New, monospace");
+}
diff --git a/src/Nonemm.App/Windows/AvailableWindow.axaml.cs b/src/Nonemm.App/Windows/AvailableWindow.axaml.cs
index d4b8127..b00caf9 100644
--- a/src/Nonemm.App/Windows/AvailableWindow.axaml.cs
+++ b/src/Nonemm.App/Windows/AvailableWindow.axaml.cs
@@ -1,3 +1,4 @@
+using Nonemm.App.Theming;
 using Avalonia.Controls;
 using Avalonia.Input;
 using Avalonia.Layout;
@@ -85,7 +86,7 @@ public sealed partial class AvailableWindow : RefreshableWindow
         TextBlock text = new()
         {
             Text = Label(station),
-            FontFamily = new FontFamily("monospace"),
+            FontFamily = Fonts.Mono,
             FontSize = 13,
             Foreground = Verdicts.Colour(station.Verdict),
             HorizontalAlignment = HorizontalAlignment.Left,
diff --git a/src/Nonemm.App/Windows/BandmapView.cs b/src/Nonemm.App/Windows/BandmapView.cs
index 44fb23c..ca715ea 100644
--- a/src/Nonemm.App/Windows/BandmapView.cs
+++ b/src/Nonemm.App/Windows/BandmapView.cs
@@ -1,3 +1,4 @@
+using Nonemm.App.Theming;
 using System.Globalization;
 using Avalonia;
 using Avalonia.Controls;
@@ -37,7 +38,7 @@ public sealed class BandmapView : Control
     /// Past the band edge. The slice can reach there when the radio does.
     private static readonly IBrush OutsideBrush = new SolidColorBrush(Color.FromRgb(0xC0, 0x39, 0x2B), 0.13);
 
-    private readonly Typeface typeface = new(new FontFamily("monospace"));
+    private readonly Typeface typeface = new(Fonts.Mono);
     private IReadOnlyList<BandmapLabel> placed = [];
     private BandmapScale scale = new(Bands.Band20M.Low, Bands.Band20M.High, 1);
 
diff --git a/src/Nonemm.App/Windows/CallStackWindow.axaml.cs b/src/Nonemm.App/Windows/CallStackWindow.axaml.cs
index 9d9b9a5..514c63b 100644
--- a/src/Nonemm.App/Windows/CallStackWindow.axaml.cs
+++ b/src/Nonemm.App/Windows/CallStackWindow.axaml.cs
@@ -1,3 +1,4 @@
+using Nonemm.App.Theming;
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Input;
@@ -45,7 +46,7 @@ public sealed partial class CallStackWindow : RefreshableWindow
         TextBlock text = new()
         {
             Text = call,
-            FontFamily = new FontFamily("monospace"),
+            FontFamily = Fonts.Mono,
             FontSize = 14,
             Foreground = Verdicts.Colour(position.JudgeCall(call)),
         };
diff --git a/src/Nonemm.App/Windows/CheckWindow.axaml.cs b/src/Nonemm.App/Windows/CheckWindow.axaml.cs
index f04c5aa..5bb8ddb 100644
--- a/src/Nonemm.App/Windows/CheckWindow.axaml.cs
+++ b/src/Nonemm.App/Windows/CheckWindow.axaml.cs
@@ -1,3 +1,4 @@
+using Nonemm.App.Theming;
 using Avalonia.Controls;
 using Avalonia.Layout;
 using Avalonia.Media;
@@ -57,7 +58,7 @@ public sealed partial class CheckWindow : RefreshableWindow
             panel.Children.Add(new TextBlock
             {
                 Text = candidate.Text,
-                FontFamily = new FontFamily("monospace"),
+                FontFamily = Fonts.Mono,
                 FontSize = 14,
                 Foreground = Verdicts.Colour(candidate.Verdict),
                 HorizontalAlignment = HorizontalAlignment.Left,
diff --git a/src/Nonemm.App/Windows/DigitalWindow.Grab.cs b/src/Nonemm.App/Windows/DigitalWindow.Grab.cs
index f79adb1..1f6fed6 100644
--- a/src/Nonemm.App/Windows/DigitalWindow.Grab.cs
+++ b/src/Nonemm.App/Windows/DigitalWindow.Grab.cs
@@ -61,7 +61,7 @@ public sealed partial class DigitalWindow
         TextBlock text = new()
         {
             Text = call,
-            FontFamily = new FontFamily("monospace"),
+            FontFamily = Fonts.Mono,
             FontSize = Settings.DigitalFontSize,
             Foreground = Verdicts.Colour(position.JudgeCall(call)),
         };
diff --git a/src/Nonemm.App/Windows/DigitalWindow.axaml b/src/Nonemm.App/Windows/DigitalWindow.axaml
index 00ddccb..db8bb7d 100644
--- a/src/Nonemm.App/Windows/DigitalWindow.axaml
+++ b/src/Nonemm.App/Windows/DigitalWindow.axaml
@@ -1,6 +1,7 @@
 <local:RefreshableWindow xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:local="using:Nonemm.App.Windows"
+        xmlns:theming="using:Nonemm.App.Theming"
         xmlns:controls="using:Nonemm.App.Controls"
         x:Class="Nonemm.App.Windows.DigitalWindow"
         Title="Digital Interface" Width="900" Height="640">
@@ -29,7 +30,7 @@
       <Setter Property="Margin" Value="6,0,4,0" />
     </Style>
     <Style Selector="TextBlock.readout">
-      <Setter Property="FontFamily" Value="monospace" />
+      <Setter Property="FontFamily" Value="{x:Static theming:Fonts.Mono}" />
       <Setter Property="FontSize" Value="12" />
       <Setter Property="VerticalAlignment" Value="Center" />
       <Setter Property="Margin" Value="4,2" />
@@ -173,7 +174,7 @@
                text, so the two wrap together and neither takes width from the
                other -->
           <controls:TransmitPane Name="TransmitBox" AcceptsReturn="True" TextWrapping="Wrap"
-                                 FontFamily="monospace"
+                                 FontFamily="{x:Static theming:Fonts.Mono}"
                                  KeyDown="OnTransmitKeyDown"
                                  TextChanged="OnTransmitTextChanged" />
         </Border>
diff --git a/src/Nonemm.App/Windows/DigitalWindow.axaml.cs b/src/Nonemm.App/Windows/DigitalWindow.axaml.cs
index f5029bf..0a572a8 100644
--- a/src/Nonemm.App/Windows/DigitalWindow.axaml.cs
+++ b/src/Nonemm.App/Windows/DigitalWindow.axaml.cs
@@ -437,7 +437,7 @@ public sealed partial class DigitalWindow : RefreshableWindow
     private TextBlock NewBlock(string text) => new()
     {
         Text = text,
-        FontFamily = new FontFamily("monospace"),
+        FontFamily = Fonts.Mono,
         FontSize = Settings.DigitalFontSize,
     };
 
diff --git a/src/Nonemm.App/Windows/EntryWindow.axaml b/src/Nonemm.App/Windows/EntryWindow.axaml
index f8c80cd..1e9d7cf 100644
--- a/src/Nonemm.App/Windows/EntryWindow.axaml
+++ b/src/Nonemm.App/Windows/EntryWindow.axaml
@@ -1,5 +1,6 @@
 <Window xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:theming="using:Nonemm.App.Theming"
         x:Class="Nonemm.App.Windows.EntryWindow"
         Title="Nonemm"
         Width="820" SizeToContent="Height"
@@ -12,7 +13,7 @@
       <Setter Property="Margin" Value="2,0,0,1" />
     </Style>
     <Style Selector="TextBox.entry">
-      <Setter Property="FontFamily" Value="monospace" />
+      <Setter Property="FontFamily" Value="{x:Static theming:Fonts.Mono}" />
       <Setter Property="FontSize" Value="20" />
       <Setter Property="Padding" Value="6,2" />
       <Setter Property="VerticalContentAlignment" Value="Center" />
@@ -165,8 +166,8 @@
 
     <StackPanel Margin="6">
       <Grid ColumnDefinitions="Auto,Auto,Auto,*,Auto" Margin="0,0,0,6">
-        <TextBlock Name="FrequencyText" FontFamily="monospace" FontSize="20" Text="14025.00" />
-        <TextBlock Grid.Column="1" Name="ModeText" FontFamily="monospace" FontSize="20"
+        <TextBlock Name="FrequencyText" FontFamily="{x:Static theming:Fonts.Mono}" FontSize="20" Text="14025.00" />
+        <TextBlock Grid.Column="1" Name="ModeText" FontFamily="{x:Static theming:Fonts.Mono}" FontSize="20"
                    Margin="10,0,0,0" Text="CW" />
         <StackPanel Grid.Column="2" Orientation="Horizontal" Spacing="4" Margin="10,2,0,2"
                     VerticalAlignment="Center">
@@ -180,11 +181,11 @@
         <TextBlock Grid.Column="3" Name="ContestText" FontSize="12" Opacity="0.75"
                    VerticalAlignment="Center" Margin="12,0,12,0" Text="no contest"
                    TextTrimming="CharacterEllipsis" ClipToBounds="True" />
-        <TextBlock Grid.Column="4" Name="ClockText" FontFamily="monospace" FontSize="20"
+        <TextBlock Grid.Column="4" Name="ClockText" FontFamily="{x:Static theming:Fonts.Mono}" FontSize="20"
                    Text="00:00:00Z" />
       </Grid>
 
-      <TextBlock Name="CallFrameText" FontFamily="monospace" FontSize="13" Height="18"
+      <TextBlock Name="CallFrameText" FontFamily="{x:Static theming:Fonts.Mono}" FontSize="13" Height="18"
                  Margin="2,0,0,1" Text="" />
 
       <Grid Name="EntryGrid" ColumnDefinitions="Auto" RowDefinitions="Auto,Auto" />
diff --git a/src/Nonemm.App/Windows/GraylineView.cs b/src/Nonemm.App/Windows/GraylineView.cs
index fe65c76..90cc74e 100644
--- a/src/Nonemm.App/Windows/GraylineView.cs
+++ b/src/Nonemm.App/Windows/GraylineView.cs
@@ -1,3 +1,4 @@
+using Nonemm.App.Theming;
 using System.Globalization;
 using Avalonia;
 using Avalonia.Controls;
@@ -26,7 +27,7 @@ public sealed class GraylineView : Control
     private static readonly IBrush Graticule = new SolidColorBrush(Colors.White, 0.15);
     private static readonly IBrush Sun = new SolidColorBrush(Color.FromRgb(0xFF, 0xD7, 0x00));
 
-    private readonly Typeface typeface = new(new FontFamily("monospace"));
+    private readonly Typeface typeface = new(Fonts.Mono);
 
     /// The moment the map is drawn for, which is now unless the operator has
     /// stepped it forward to see where the grey line will be.
diff --git a/src/Nonemm.App/Windows/LogWindow.axaml b/src/Nonemm.App/Windows/LogWindow.axaml
index 99932f3..f921caa 100644
--- a/src/Nonemm.App/Windows/LogWindow.axaml
+++ b/src/Nonemm.App/Windows/LogWindow.axaml
@@ -1,6 +1,7 @@
 <local:RefreshableWindow xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:local="using:Nonemm.App.Windows"
+        xmlns:theming="using:Nonemm.App.Theming"
         x:Class="Nonemm.App.Windows.LogWindow"
         Title="Log" Width="1000" Height="420">
   <DockPanel>
@@ -10,7 +11,7 @@
         <!-- the DataGrid's own font settings do not reach the cells, and the
              columns are sized from the width of the text in this font -->
         <Style Selector="DataGridCell TextBlock">
-          <Setter Property="FontFamily" Value="monospace" />
+          <Setter Property="FontFamily" Value="{x:Static theming:Fonts.Mono}" />
           <Setter Property="FontSize" Value="12" />
           <!-- half of what the theme leaves either side of the text, so more
                columns fit across the window -->
@@ -43,7 +44,7 @@
              padding is what the cell gives its text, so the text does not move
              sideways as the box opens -->
         <Style Selector="DataGridCell TextBox">
-          <Setter Property="FontFamily" Value="monospace" />
+          <Setter Property="FontFamily" Value="{x:Static theming:Fonts.Mono}" />
           <Setter Property="FontSize" Value="12" />
           <Setter Property="MinHeight" Value="0" />
           <Setter Property="Margin" Value="0" />
@@ -53,11 +54,11 @@
         </Style>
       </Grid.Styles>
       <DataGrid Name="Rows" Grid.Row="0" GridLinesVisibility="Horizontal" CanUserSortColumns="True"
-                CanUserReorderColumns="True" FontSize="12" FontFamily="monospace" />
+                CanUserReorderColumns="True" FontSize="12" FontFamily="{x:Static theming:Fonts.Mono}" />
       <GridSplitter Grid.Row="1" Height="3" ResizeDirection="Rows" />
       <DataGrid Name="Earlier" Grid.Row="2" IsReadOnly="True" GridLinesVisibility="Horizontal"
                 CanUserSortColumns="False" HeadersVisibility="None"
-                FontSize="12" FontFamily="monospace" />
+                FontSize="12" FontFamily="{x:Static theming:Fonts.Mono}" />
     </Grid>
   </DockPanel>
 </local:RefreshableWindow>
diff --git a/src/Nonemm.App/Windows/NetworkStatusWindow.axaml b/src/Nonemm.App/Windows/NetworkStatusWindow.axaml
index 2fe0a90..1045226 100644
--- a/src/Nonemm.App/Windows/NetworkStatusWindow.axaml
+++ b/src/Nonemm.App/Windows/NetworkStatusWindow.axaml
@@ -1,6 +1,7 @@
 <local:RefreshableWindow xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:local="using:Nonemm.App.Windows"
+        xmlns:theming="using:Nonemm.App.Theming"
         x:Class="Nonemm.App.Windows.NetworkStatusWindow"
         Title="Network Status" Width="1000" Height="380">
   <DockPanel>
@@ -10,12 +11,12 @@
 
       <TabItem Header="Stations" Name="StationsTab">
         <DataGrid Name="Rows" IsReadOnly="True" GridLinesVisibility="Horizontal"
-                  CanUserSortColumns="False" FontSize="12" FontFamily="monospace"
+                  CanUserSortColumns="False" FontSize="12" FontFamily="{x:Static theming:Fonts.Mono}"
                   AutoGenerateColumns="False" x:DataType="local:StationRow">
           <DataGrid.Styles>
             <!-- the grid's own font settings do not reach the cells -->
             <Style Selector="DataGridCell TextBlock">
-              <Setter Property="FontFamily" Value="monospace" />
+              <Setter Property="FontFamily" Value="{x:Static theming:Fonts.Mono}" />
               <Setter Property="FontSize" Value="12" />
             </Style>
           </DataGrid.Styles>
@@ -72,7 +73,7 @@
             </StackPanel>
           </StackPanel>
           <DataGrid Name="ResyncRows" IsReadOnly="True" GridLinesVisibility="Horizontal"
-                    CanUserSortColumns="False" FontSize="12" FontFamily="monospace"
+                    CanUserSortColumns="False" FontSize="12" FontFamily="{x:Static theming:Fonts.Mono}"
                     AutoGenerateColumns="False" x:DataType="local:StationRow">
             <DataGrid.Columns>
               <DataGridTextColumn Header="Name" Binding="{Binding Computer}" />
@@ -156,7 +157,7 @@
             <Button Content="Clear Messages" Click="OnClearMessages" />
           </StackPanel>
           <ScrollViewer Name="MessageScroll">
-            <TextBlock Name="MessageText" FontFamily="monospace" FontSize="11" TextWrapping="Wrap" />
+            <TextBlock Name="MessageText" FontFamily="{x:Static theming:Fonts.Mono}" FontSize="11" TextWrapping="Wrap" />
           </ScrollViewer>
         </DockPanel>
       </TabItem>
diff --git a/src/Nonemm.App/Windows/QtcWindow.axaml.cs b/src/Nonemm.App/Windows/QtcWindow.axaml.cs
index 5bb5090..7b947a1 100644
--- a/src/Nonemm.App/Windows/QtcWindow.axaml.cs
+++ b/src/Nonemm.App/Windows/QtcWindow.axaml.cs
@@ -225,7 +225,7 @@ public sealed partial class QtcWindow : Window
     {
         TextBox box = new()
         {
-            FontFamily = new FontFamily("monospace"),
+            FontFamily = Fonts.Mono,
             Margin = new Avalonia.Thickness(2, 1, 2, 1),
             IsReadOnly = isSending,
         };
diff --git a/src/Nonemm.App/Windows/ScoreWindow.axaml.cs b/src/Nonemm.App/Windows/ScoreWindow.axaml.cs
index 0b3d8d4..0e0bd71 100644
--- a/src/Nonemm.App/Windows/ScoreWindow.axaml.cs
+++ b/src/Nonemm.App/Windows/ScoreWindow.axaml.cs
@@ -1,3 +1,4 @@
+using Nonemm.App.Theming;
 using Avalonia.Controls;
 using Nonemm.Contests;
 using Nonemm.Core;
@@ -109,7 +110,7 @@ public sealed partial class ScoreWindow : RefreshableWindow
             TextBlock text = new()
             {
                 Text = cells[column],
-                FontFamily = new Avalonia.Media.FontFamily("monospace"),
+                FontFamily = Fonts.Mono,
                 FontSize = 13,
                 Opacity = header ? 1.0 : 0.85,
                 Margin = new Avalonia.Thickness(0, 2, 8, 2),
diff --git a/src/Nonemm.App/Windows/StatisticsChart.cs b/src/Nonemm.App/Windows/StatisticsChart.cs
index 60f7f58..a15bc57 100644
--- a/src/Nonemm.App/Windows/StatisticsChart.cs
+++ b/src/Nonemm.App/Windows/StatisticsChart.cs
@@ -1,3 +1,4 @@
+using Nonemm.App.Theming;
 using System.Globalization;
 using Avalonia;
 using Avalonia.Controls;
@@ -23,7 +24,7 @@ public sealed class StatisticsChart : Control
     /// the gap would take more room than the column.
     private const double NarrowColumn = 4;
 
-    private readonly Typeface typeface = new(new FontFamily("monospace"));
+    private readonly Typeface typeface = new(Fonts.Mono);
 
     public IReadOnlyList<ChartColumn> Columns { get; set; } = [];
 
diff --git a/src/Nonemm.App/Windows/StatisticsWindow.axaml b/src/Nonemm.App/Windows/StatisticsWindow.axaml
index e3a6e68..728204d 100644
--- a/src/Nonemm.App/Windows/StatisticsWindow.axaml
+++ b/src/Nonemm.App/Windows/StatisticsWindow.axaml
@@ -1,6 +1,7 @@
 <local:RefreshableWindow xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:local="using:Nonemm.App.Windows"
+        xmlns:theming="using:Nonemm.App.Theming"
         x:Class="Nonemm.App.Windows.StatisticsWindow"
         Title="Statistics" Width="940" Height="560">
   <DockPanel>
@@ -33,12 +34,12 @@
           <Grid.Styles>
             <!-- the DataGrid's own font settings do not reach the cells -->
             <Style Selector="DataGridCell TextBlock">
-              <Setter Property="FontFamily" Value="monospace" />
+              <Setter Property="FontFamily" Value="{x:Static theming:Fonts.Mono}" />
               <Setter Property="FontSize" Value="12" />
             </Style>
           </Grid.Styles>
           <DataGrid Name="Table" IsReadOnly="True" CanUserSortColumns="False"
-                    GridLinesVisibility="All" FontFamily="monospace" FontSize="12" />
+                    GridLinesVisibility="All" FontFamily="{x:Static theming:Fonts.Mono}" FontSize="12" />
           <TextBlock Name="EmptyText" Margin="12" IsVisible="False" />
         </Grid>
       </TabItem>
diff --git a/src/Nonemm.App/Windows/TelnetWindow.axaml b/src/Nonemm.App/Windows/TelnetWindow.axaml
index 81066d8..14f56ac 100644
--- a/src/Nonemm.App/Windows/TelnetWindow.axaml
+++ b/src/Nonemm.App/Windows/TelnetWindow.axaml
@@ -1,6 +1,7 @@
 <local:RefreshableWindow xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:local="using:Nonemm.App.Windows"
+        xmlns:theming="using:Nonemm.App.Theming"
         x:Class="Nonemm.App.Windows.TelnetWindow"
         Title="Telnet" Width="760" Height="520">
   <Window.Styles>
@@ -32,7 +33,7 @@
             <TextBox Name="CommandBox" PlaceholderText="command to the node" KeyDown="OnCommandKey" />
           </DockPanel>
         </StackPanel>
-        <ListBox Name="Traffic" FontFamily="monospace" FontSize="12" Margin="8,0"
+        <ListBox Name="Traffic" FontFamily="{x:Static theming:Fonts.Mono}" FontSize="12" Margin="8,0"
                  DoubleTapped="OnJumpToSpot">
           <ListBox.ContextMenu>
             <ContextMenu>