diff --git a/background/background.js b/background/background.js
index c94b2525..0d5be065 100644
--- a/background/background.js
+++ b/background/background.js
@@ -346,12 +346,12 @@ function closeTab(tabId, request) {
       const {lastError} = chrome.runtime;
       if (lastError) {
         resolve({
-          status: 'error',
+          success: false,
           error: lastError.message || String(lastError)
         });
         return;
       }
-      resolve({status: 'success'});
+      resolve({success: true});
     });
   });
 }
diff --git a/background/usercss-helper.js b/background/usercss-helper.js
index 26bf92d8..f2d7521d 100644
--- a/background/usercss-helper.js
+++ b/background/usercss-helper.js
@@ -22,8 +22,8 @@ var usercssHelper = (() => {
   }
 
   function wrapReject(pending) {
-    return pending.then(result => ({status: 'success', result}))
-      .catch(err => ({status: 'error', result: err.message || String(err)}));
+    return pending.then(result => ({success: true, result}))
+      .catch(err => ({success: false, result: err.message || String(err)}));
   }
 
   // Parse the source and find the duplication
diff --git a/content/util.js b/content/util.js
index c639440f..34160e87 100644
--- a/content/util.js
+++ b/content/util.js
@@ -4,7 +4,7 @@ function runtimeSend(request) {
   return new Promise((resolve, reject) => {
     chrome.runtime.sendMessage(
       request,
-      ({status, result}) => (status === 'error' ? reject : resolve)(result)
+      ({success, result}) => (success ? resolve : reject)(result)
     );
   });
 }