diff --git a/toolkit/mozapps/extensions/test/browser/browser_experiments.js b/toolkit/mozapps/extensions/test/browser/browser_experiments.js
index a21b40f446f..3da5fd423fe 100644
--- a/toolkit/mozapps/extensions/test/browser/browser_experiments.js
+++ b/toolkit/mozapps/extensions/test/browser/browser_experiments.js
@@ -459,7 +459,7 @@ add_task(function testActivateRealExperiments() {
   is_element_hidden(el, "warning-container should be hidden.");
   el = item.ownerDocument.getAnonymousElementByAttribute(item, "anonid", "pending-container");
   is_element_hidden(el, "pending-container should be hidden.");
-  ({ version }) = yield get_tooltip_info(item);
+  ({ version } = yield get_tooltip_info(item));
   Assert.equal(version, undefined, "version should be hidden.");
   el = item.ownerDocument.getAnonymousElementByAttribute(item, "class", "disabled-postfix");
   is_element_hidden(el, "disabled-postfix should be hidden.");