diff --git a/userChrome.css b/userChrome.css
index 0030a84..92ca098 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -525,6 +525,9 @@
   #appmenu-developer-tools-view  .subviewbutton:nth-child(10) { /* Extensions for Devel */
     list-style-image: url(chrome://devtools/skin/images/debugging-addons.svg);
   }
+  #appmenu-developer-tools-view .subviewbutton:last-child {
+    margin-bottom: 6px;
+  }
 
   /* Panel - Help */
   #appMenu_menu_openHelp {