1 files changed, 1 insertions, 1 deletions
diff --git a/src/content/MessageListener.ts b/src/content/MessageListener.ts
index 3fe1dcd..ec6940b 100644
--- a/src/content/MessageListener.ts
+++ b/src/content/MessageListener.ts
@@ -27,7 +27,7 @@ export default class MessageListener {
   ) {
     browser.runtime.onMessage.addListener(
       (msg: any, sender: WebExtMessageSender) => {
-        return listener(valueOf(msg), sender);
+        return Promise.resolve(listener(valueOf(msg), sender));
       }
     );
   }