diff --git a/browser/base/content/main-popupset.inc.xhtml b/browser/base/content/main-popupset.inc.xhtml
index e55aa9f8eece..00a2ad1f8fa2 100644
--- a/browser/base/content/main-popupset.inc.xhtml
+++ b/browser/base/content/main-popupset.inc.xhtml
@@ -68,7 +68,7 @@
oncommand="gBrowser.selectAllTabs();"/>