diff --git a/data/theme/gnome-shell.css b/data/theme/gnome-shell.css
index 91f08affa..41e168658 100644
--- a/data/theme/gnome-shell.css
+++ b/data/theme/gnome-shell.css
@@ -146,6 +146,7 @@ StTooltip {
     background-image: url("close-window.svg");
     height: 24px;
     width: 24px;
+    -st-shadow: -2px 2px 6px rgba(0,0,0,0.5);
     -shell-close-overlap: 16px;
 }