diff --git a/gtk-3.0/scss/widgets/_window.scss b/gtk-3.0/scss/widgets/_window.scss
index 7e965b8..18d924d 100755
--- a/gtk-3.0/scss/widgets/_window.scss
+++ b/gtk-3.0/scss/widgets/_window.scss
@@ -51,6 +51,8 @@
         }
 
         &.ssd {
+            // Fixed gtk-3.18 Unity bug (https://github.com/numixproject/numix-gtk-theme/issues/270)
+            box-shadow: 0 0 0 1px transparent;
             &.maximized { border-radius: 0; }
         }
     }