diff --git a/src/cascadia/TerminalSettingsModel/GlobalAppSettings.h b/src/cascadia/TerminalSettingsModel/GlobalAppSettings.h
index eca1d28e04f..e90253a28cd 100644
--- a/src/cascadia/TerminalSettingsModel/GlobalAppSettings.h
+++ b/src/cascadia/TerminalSettingsModel/GlobalAppSettings.h
@@ -61,10 +61,6 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
         void AddTheme(const Model::Theme& theme);
         Model::Theme CurrentTheme() noexcept;
 
-        Windows::Foundation::Collections::IMapView<hstring, Model::Theme> Themes() noexcept;
-        void AddTheme(const Model::Theme& theme);
-        Model::Theme CurrentTheme() noexcept;
-
         INHERITABLE_SETTING(Model::GlobalAppSettings, hstring, UnparsedDefaultProfile, L"");
 
 #define GLOBAL_SETTINGS_INITIALIZE(type, name, jsonKey, ...) \
diff --git a/src/cascadia/TerminalSettingsModel/TerminalSettingsSerializationHelpers.h b/src/cascadia/TerminalSettingsModel/TerminalSettingsSerializationHelpers.h
index 292ffbbd190..1f714c25346 100644
--- a/src/cascadia/TerminalSettingsModel/TerminalSettingsSerializationHelpers.h
+++ b/src/cascadia/TerminalSettingsModel/TerminalSettingsSerializationHelpers.h
@@ -631,6 +631,15 @@ struct ::Microsoft::Terminal::Settings::Model::JsonUtils::ConversionTrait<winrt:
     }
 };
 
+JSON_ENUM_MAPPER(::winrt::Microsoft::Terminal::Settings::Model::TabCloseButtonVisibility)
+{
+    JSON_MAPPINGS(3) = {
+        pair_type{ "always", ValueType::Always },
+        pair_type{ "hover", ValueType::Hover },
+        pair_type{ "never", ValueType::Never },
+    };
+};
+
 // Possible ScrollToMarkDirection values
 JSON_ENUM_MAPPER(::winrt::Microsoft::Terminal::Control::ScrollToMarkDirection)
 {