diff --git a/specs/TitleBar/titlebar-functional-spec.md b/specs/TitleBar/titlebar-functional-spec.md
index 5962a780a2..5d87ae412d 100644
--- a/specs/TitleBar/titlebar-functional-spec.md
+++ b/specs/TitleBar/titlebar-functional-spec.md
@@ -53,7 +53,7 @@ Caption Buttons and its customizations are handled by the AppWindow TitleBar._
 ![alt text](images/default-titlebar.png)
 
 XAML
-```xml
+```xaml
 <Window
     x:Class="App1.MainWindow"
     xmlns:local="using:App1"