diff --git a/gtk-3.0/scss/widgets/_window.scss b/gtk-3.0/scss/widgets/_window.scss
index 18d924d..7742fbb 100755
--- a/gtk-3.0/scss/widgets/_window.scss
+++ b/gtk-3.0/scss/widgets/_window.scss
@@ -52,7 +52,8 @@
 
         &.ssd {
             // Fixed gtk-3.18 Unity bug (https://github.com/numixproject/numix-gtk-theme/issues/270)
-            box-shadow: 0 0 0 1px transparent;
+            box-shadow: 0 0 0 1px $wm_border_focused;
+
             &.maximized { border-radius: 0; }
         }
     }