diff --git a/extensions/chromium/runet-censorship-bypass/src/extension-common/11-error-handlers-api.js b/extensions/chromium/runet-censorship-bypass/src/extension-common/11-error-handlers-api.js
index 96d3263..9e93a98 100644
--- a/extensions/chromium/runet-censorship-bypass/src/extension-common/11-error-handlers-api.js
+++ b/extensions/chromium/runet-censorship-bypass/src/extension-common/11-error-handlers-api.js
@@ -148,7 +148,9 @@
         timeouted(
           (details) => {
 
-            this.isControllable(details);
+            if (details) {
+              this.isControllable(details);
+            }
             cb();
 
           }