--- a/browser/base/content/browser.css
+++ b/browser/base/content/browser.css
@@ -768,16 +768,20 @@ toolbarspring {
   max-width: 112px;
 }
 
 #nav-bar toolbarpaletteitem[id^=wrapper-customizableui-special-spring],
 #nav-bar toolbarspring {
   -moz-box-flex: 80;
 }
 
+#widget-overflow-list > toolbarspring {
+  display: none;
+}
+
 /* ::::: Unified Back-/Forward Button ::::: */
 .unified-nav-current {
   font-weight: bold;
 }
 
 .bookmark-item > label {
   /* ensure we use the direction of the bookmarks label instead of the
    * browser locale */