diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 198690e5fb..dc02b49aca 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -4601,6 +4601,8 @@ decoration {
   // just doing borders, wm draws actual shadows
   .ssd & { box-shadow: 0 0 0 1px $_wm_border; }
   .ssd &:backdrop { box-shadow: 0 0 0 1px $_wm_border_backdrop; }
+  .ssd.maximized &,
+  .ssd.maximized &:backdrop { box-shadow: none; }
 
   .csd.popup & {
     border-radius: $menu_radius;