diff --git a/src/cascadia/TerminalSettingsEditor/MainPage.xaml b/src/cascadia/TerminalSettingsEditor/MainPage.xaml
index 2e5cdde3375..3911f6e6804 100644
--- a/src/cascadia/TerminalSettingsEditor/MainPage.xaml
+++ b/src/cascadia/TerminalSettingsEditor/MainPage.xaml
@@ -17,14 +17,17 @@ the MIT License. See LICENSE in the project root for license information. -->
 
             <AcrylicBrush x:Key="NavigationViewDefaultPaneBackground"
                           BackgroundSource="Backdrop"
+                          FallbackColor="{ThemeResource SystemChromeMediumLowColor}"
                           TintColor="{ThemeResource SystemChromeMediumColor}"
                           TintOpacity="0.5"/>
             <AcrylicBrush x:Key="NavigationViewTopPaneBackground"
                           BackgroundSource="Backdrop"
+                          FallbackColor="{ThemeResource SystemChromeMediumLowColor}"
                           TintColor="{ThemeResource SystemChromeMediumColor}"
                           TintOpacity="0.5"/>
             <AcrylicBrush x:Key="NavigationViewExpandedPaneBackground"
                           BackgroundSource="HostBackdrop"
+                          FallbackColor="{ThemeResource SystemChromeMediumLowColor}"
                           TintColor="{ThemeResource SystemChromeMediumColor}"
                           TintOpacity="0.7"/>
         </ResourceDictionary>