diff --git a/wwwroot/top.ui b/wwwroot/top.ui
index bab891d..162ed8e 100644
--- a/wwwroot/top.ui
+++ b/wwwroot/top.ui
@@ -24,7 +24,7 @@
 			"options":{
 				"css": "clickable",
 				"cwidth":1.5,
-				"cheight":"1.5,
+				"cheight":1.5,
 				"tip": "show all the closed window",
 				"url":"{{entire_url('/bricks/imgs/app-dock.svg')}}"
 			},