diff --git a/apps/extension/src/entry/offscreen-handler.ts b/apps/extension/src/entry/offscreen-handler.ts
index 89a8084a2f..fec4af8ac9 100644
--- a/apps/extension/src/entry/offscreen-handler.ts
+++ b/apps/extension/src/entry/offscreen-handler.ts
@@ -24,6 +24,7 @@ chrome.runtime.onMessage.addListener((req, _sender, respond) => {
     })();
     return true;
   }
+  return false;
 });
 
 const spawnActionBuildWorker = (req: ActionBuildRequest) => {