diff --git a/src/js/background/messageHandler.js b/src/js/background/messageHandler.js
index 2e39510..f7e0669 100644
--- a/src/js/background/messageHandler.js
+++ b/src/js/background/messageHandler.js
@@ -83,7 +83,7 @@ const messageHandler = {
 
     if (browser.contextualIdentities.onCreated) {
       browser.contextualIdentities.onCreated.addListener(({contextualIdentity}) => {
-        assignManager.addContainerMenuEntry(contextualIdentity, ["all", "tab"])
+        assignManager.addContainerMenuEntry(contextualIdentity, ["all", "tab"]);
       });
     }