diff --git a/src/vs/workbench/parts/markers/browser/media/markers.css b/src/vs/workbench/parts/markers/browser/media/markers.css
index 3a1288114de3..491e4ac3590a 100644
--- a/src/vs/workbench/parts/markers/browser/media/markers.css
+++ b/src/vs/workbench/parts/markers/browser/media/markers.css
@@ -4,7 +4,9 @@
  *--------------------------------------------------------------------------------------------*/
 
 .monaco-action-bar .action-item.markers-panel-action-filter {
-	width: 400px;
+	max-width: 400px;
+	min-width: 100px;
+	flex: 1;
 	cursor: default;
 	margin: 4px 10px 0 0;
 }