diff --git a/Paper/gtk-3.0/widgets/header-bar.css b/Paper/gtk-3.0/widgets/header-bar.css
index e5da536..9b87cc5 100644
--- a/Paper/gtk-3.0/widgets/header-bar.css
+++ b/Paper/gtk-3.0/widgets/header-bar.css
@@ -159,7 +159,7 @@
 .header-bar .image-button:checked {
     border-radius: 0px;
     background-image: none;
-    /*background-color: alpha(#000, 0.1);*/
+    background-color: none;
     border: none;
     color: @header_text;
     box-shadow:inset 0 -2px 0 0 @header_text;