diff --git a/src/Nonemm.Storage/SqliteLogStore.cs b/src/Nonemm.Storage/SqliteLogStore.cs
index b0d6ccb..7bb8aef 100644
--- a/src/Nonemm.Storage/SqliteLogStore.cs
+++ b/src/Nonemm.Storage/SqliteLogStore.cs
@@ -33,12 +33,23 @@ public sealed class SqliteLogStore : LogStore
     {
         using SqliteCommand command = connection.CreateCommand();
         command.CommandText = """
-            INSERT OR REPLACE INTO Contest
+            INSERT INTO Contest
               (Name, DisplayName, CabrilloName, Mode, DupeType, Multiplier1Name,
                Multiplier2Name, Multiplier3Name, Period, PointsPerContact, CabrilloVersion)
             VALUES
               (@name, @display, @cabrillo, @mode, @dupe, @mult1, @mult2, @mult3,
                @period, @points, @version)
+            ON CONFLICT(Name) DO UPDATE SET
+              DisplayName = excluded.DisplayName,
+              CabrilloName = excluded.CabrilloName,
+              Mode = excluded.Mode,
+              DupeType = excluded.DupeType,
+              Multiplier1Name = excluded.Multiplier1Name,
+              Multiplier2Name = excluded.Multiplier2Name,
+              Multiplier3Name = excluded.Multiplier3Name,
+              Period = excluded.Period,
+              PointsPerContact = excluded.PointsPerContact,
+              CabrilloVersion = excluded.CabrilloVersion
             """;
         command.Parameters.AddWithValue("@name", definition.Name);
         command.Parameters.AddWithValue("@display", definition.DisplayName);
diff --git a/tests/Nonemm.Storage.Tests/SqliteLogStoreTests.cs b/tests/Nonemm.Storage.Tests/SqliteLogStoreTests.cs
index b99372c..b1038c7 100644
--- a/tests/Nonemm.Storage.Tests/SqliteLogStoreTests.cs
+++ b/tests/Nonemm.Storage.Tests/SqliteLogStoreTests.cs
@@ -195,4 +195,40 @@ public class SqliteLogStoreTests : IDisposable
         command.CommandText = sql;
         command.ExecuteNonQuery();
     }
+
+    [Fact]
+    public void SavingADefinitionAgainKeepsTheMessagesN1mmStored()
+    {
+        ContestDefinition definition = new()
+        {
+            Name = "CQWWCW",
+            DisplayName = "CQ WorldWide CW",
+            CabrilloName = "CQ-WW-CW",
+            Mode = "CW",
+        };
+        using (SqliteLogStore store = SqliteLogStore.Open(path))
+        {
+            store.SaveContestDefinition(definition);
+        }
+        using (SqliteConnection connection = new($"Data Source={path}"))
+        {
+            connection.Open();
+            using SqliteCommand set = connection.CreateCommand();
+            set.CommandText = "UPDATE Contest SET CWMessages = 'F1;CQ' WHERE Name = 'CQWWCW'";
+            set.ExecuteNonQuery();
+        }
+
+        using (SqliteLogStore store = SqliteLogStore.Open(path))
+        {
+            store.SaveContestDefinition(definition with { DisplayName = "Renamed" });
+        }
+
+        using SqliteConnection check = new($"Data Source={path}");
+        check.Open();
+        using SqliteCommand read = check.CreateCommand();
+        read.CommandText = "SELECT DisplayName, CWMessages FROM Contest WHERE Name = 'CQWWCW'";
+        using SqliteDataReader row = read.ExecuteReader();
+        Assert.True(row.Read());
+        Assert.Equal(("Renamed", "F1;CQ"), (row.GetString(0), row.GetString(1)));
+    }
 }