diff --git a/browser/themes/winstripe/browser/browser-aero.css b/browser/themes/winstripe/browser/browser-aero.css
index fc376d5dfb8..5052c7ae3fa 100644
--- a/browser/themes/winstripe/browser/browser-aero.css
+++ b/browser/themes/winstripe/browser/browser-aero.css
@@ -63,7 +63,6 @@
     background-color: transparent;
     -moz-margin-start: -3px;
     position: relative;
-    z-index: 10;
   }
 }
 
diff --git a/browser/themes/winstripe/browser/places/organizer-aero.css b/browser/themes/winstripe/browser/places/organizer-aero.css
index 184ec85efc5..955408d02c3 100644
--- a/browser/themes/winstripe/browser/places/organizer-aero.css
+++ b/browser/themes/winstripe/browser/places/organizer-aero.css
@@ -30,11 +30,10 @@
   border: 0;
   -moz-border-end: 1px solid #A9B7C9;
   min-width: 0;
-  width: 3px !important;
+  width: 3px;
   background-color: transparent;
   -moz-margin-start: -3px;
   position: relative;
-  z-index: 10;
 }
 
 #searchModifiers:-moz-system-metric(windows-default-theme) {