diff --git a/browser/modules/UITour.jsm b/browser/modules/UITour.jsm
index a8a8e518a48b..7534fd4b4b87 100644
--- a/browser/modules/UITour.jsm
+++ b/browser/modules/UITour.jsm
@@ -1645,7 +1645,7 @@ this.UITour = {
       let window = winEnum.getNext();
       if (window.closed)
         continue;
-debugger;
+
       let originTabs = this.originTabs.get(window);
       if (!originTabs)
         continue;