diff --git a/src/vs/workbench/browser/parts/titlebar/media/titlebarpart.css b/src/vs/workbench/browser/parts/titlebar/media/titlebarpart.css
index 2f312f558190327585e8eab4d4abc8fd35c3661e..265d6518c4019db570e01e667951ddb5f91979a0 100644
--- a/src/vs/workbench/browser/parts/titlebar/media/titlebarpart.css
+++ b/src/vs/workbench/browser/parts/titlebar/media/titlebarpart.css
@@ -68,7 +68,7 @@
 	position: absolute;
 	top: 0;
 	width: 100%;
-	height: 20%;
+	height: 4px;
 }
 
 .monaco-workbench.windows.fullscreen .part.titlebar > .resizer,