diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 104f09d707..a2f4eab20b 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -1738,6 +1738,10 @@ popover.background {
     box-shadow: 0 1px 2px transparentize(black, 0.7);
   }
 
+  &:backdrop {
+    background-color: transparent;
+  }
+
   > contents {
     padding: 8px;
     border-radius: $popover_radius;