diff --git a/apps/ai-game-creator-shell/src/App.tsx b/apps/ai-game-creator-shell/src/App.tsx
index 458b5bcc4..42dabda45 100644
--- a/apps/ai-game-creator-shell/src/App.tsx
+++ b/apps/ai-game-creator-shell/src/App.tsx
@@ -3080,7 +3080,10 @@ export function App({
       return;
     }
     const draft = chatComposerRef.current?.getDraft();
-    persistSupervisorChatDraft(initialProjectPath, draft?.text ?? '');
+    if (!draft?.text.trim()) {
+      return;
+    }
+    persistSupervisorChatDraft(initialProjectPath, draft.text);
   }, [initialProjectPath, supervisorChatOnly]);
 
   useEffect(() => {