diff --git a/lib/components/window_frame.dart b/lib/components/window_frame.dart
index 6525970..c716d18 100644
--- a/lib/components/window_frame.dart
+++ b/lib/components/window_frame.dart
@@ -82,7 +82,10 @@ class _WindowFrameState extends State<WindowFrame> {
         return;
       }
     }
-    windowManager.close();
+    windowManager.close().then((_) {
+      // Make sure the app exits when the window is closed.
+      exit(0);
+    });
   }
 
   @override