--- a/browser/modules/ExtensionsUI.jsm
+++ b/browser/modules/ExtensionsUI.jsm
@@ -133,16 +133,17 @@ this.ExtensionsUI = {
         reply(true);
       } else {
         info.permissions = perms;
         let strings = this._buildStrings(info);
         this.showPermissionsPrompt(target, strings, info.icon).then(reply);
       }
     } else if (topic == "webextension-update-permissions") {
       let info = subject.wrappedJSObject;
+      info.type = "update";
       let strings = this._buildStrings(info);
 
       // If we don't prompt for any new permissions, just apply it
       if (strings.msgs.length == 0) {
         info.resolve();
         return;
       }