diff --git a/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.Model.idl b/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.Model.idl
index 79fb9c6c84..f2bbea07b7 100644
--- a/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.Model.idl
+++ b/src/cascadia/TerminalSettingsModel/Microsoft.Terminal.Settings.Model.idl
@@ -524,6 +524,7 @@ namespace Microsoft.Terminal.Settings.Model
         // We need a sentinel value to map deleted keys to, as we can't actually delete them (GH#16874)
         IgnoredDeprecatedEntry = 0,
         CloseOnExitInfo,
+        KeyboardServiceWarning,
     };
 
     runtimeclass WindowLayout