diff --git a/browser/themes/windows/browser.css b/browser/themes/windows/browser.css
index e7fad4e2ddcc..a0eabd01b80d 100644
--- a/browser/themes/windows/browser.css
+++ b/browser/themes/windows/browser.css
@@ -769,6 +769,7 @@ toolbarbutton[sdk-button="true"][cui-areatype="toolbar"] > .toolbarbutton-icon {
     border-bottom-left-radius: 0;
   }
 
+  #nav-bar .toolbarbutton-1:not([disabled=true]) > .toolbarbutton-menubutton-button[open] + .toolbarbutton-menubutton-dropmarker > .dropmarker-icon,
   #nav-bar .toolbarbutton-1:not([disabled]):-moz-any(:hover,[open]) > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
   #nav-bar .toolbarbutton-1:not([disabled]):hover > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon,
   #nav-bar .toolbarbutton-1:not([disabled]):not([checked]):not([open]):not(:active):hover > .toolbarbutton-icon,
@@ -811,7 +812,7 @@ toolbarbutton[sdk-button="true"][cui-areatype="toolbar"] > .toolbarbutton-icon {
        (-moz-os-version: windows-win7) {
 %endif
   /* < Win8 */
-  #nav-bar .toolbarbutton-1 > .toolbarbutton-menubutton-button:not([disabled]):hover:active > .toolbarbutton-icon,
+  #nav-bar .toolbarbutton-1 > .toolbarbutton-menubutton-button:not([disabled=true]):-moz-any(:hover:active, [open]) > .toolbarbutton-icon,
   #nav-bar .toolbarbutton-1[open] > .toolbarbutton-menubutton-dropmarker:not([disabled]) > .dropmarker-icon,
   #nav-bar .toolbarbutton-1:not([disabled]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-icon,
   #nav-bar .toolbarbutton-1:not([disabled]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-text,