diff --git a/browser/base/content/webext-panels.xhtml b/browser/base/content/webext-panels.xhtml
index 902fa7e7b3edb3c9502a12e475ade016436b2490..5c6ad5f9d86cd29a12483d7cb71ce9979002f092 100644
--- a/browser/base/content/webext-panels.xhtml
+++ b/browser/base/content/webext-panels.xhtml
@@ -16,6 +16,7 @@
+