diff --git a/src/background/index.js b/src/background/index.js
index d92853b..882d7c4 100644
--- a/src/background/index.js
+++ b/src/background/index.js
@@ -68,10 +68,15 @@ browser.runtime.onMessageExternal.addListener(
             enableDescriptionAsComment
           })
           .then(suite => {
-            sendResponse({
+            return sendResponse({
               filename: suite.filename,
               body: suite.body
             });
+          })
+          .catch(e => {
+            return sendResponse({
+              error: e.message
+            });
           });
       } else {
         emitters.emit
@@ -85,10 +90,15 @@ browser.runtime.onMessageExternal.addListener(
             enableDescriptionAsComment
           })
           .then(test => {
-            sendResponse({
+            return sendResponse({
               filename: test.filename,
               body: test.body
             });
+          })
+          .catch(e => {
+            return sendResponse({
+              error: e.message
+            });
           });
       }