diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 90081bbc25..6b64e84692 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -3181,7 +3181,6 @@ levelbar {
   // level bar colours
   > trough > block {
     border: 1px solid;
-    box-shadow: inset 0 1px 0 0 rgba(255,255,255,0.2);
 
     &.low {
       border-color: if($variant == 'light', darken($warning_color, 10%), $borders_color);