diff --git a/windowControlsOverlay-newCSSVars/manifest.webmanifest b/windowControlsOverlay-newCSSVars/manifest.webmanifest
index 68ea793..ee47b45 100644
--- a/windowControlsOverlay-newCSSVars/manifest.webmanifest
+++ b/windowControlsOverlay-newCSSVars/manifest.webmanifest
@@ -17,6 +17,7 @@
       "sizes": "144x144"
     }
   ],
+  "description": "A Window Controls Overlay sample app.",
   "screenshots": [
     {
       "src": "screenshot.png",