diff --git a/src/themes/Kali/sass/gtk3/_common-tweaks.scss b/src/themes/Kali/sass/gtk3/_common-tweaks.scss
index 1f314e13..6fe83590 100644
--- a/src/themes/Kali/sass/gtk3/_common-tweaks.scss
+++ b/src/themes/Kali/sass/gtk3/_common-tweaks.scss
@@ -551,8 +551,12 @@ placessidebar {
  *********************/
 decoration {
   $_border_width: 1px;
-  border-radius: $window_radius+$_border_width $window_radius+$_border_width $button_radius+$_border_width $button_radius+$_border_width;
+  $_top_window_radius: $window_radius+$_border_width;
+  $_bottom_window_radius: min($button_radius+$_border_width, 6px);
+  border-radius: $_top_window_radius $_top_window_radius $_bottom_window_radius $_bottom_window_radius;
   border: $_border_width solid $base_color;
+  border-bottom-width: 2px;
+  background: $bg_color;
 
   box-shadow: 0 2px 8px 0 transparentize(black, 0.6),
               0 0 0 1px $_wm_border;