diff --git a/app/views/files/index.html.erb b/app/views/files/index.html.erb
index eb2597127..34f7452a7 100644
--- a/app/views/files/index.html.erb
+++ b/app/views/files/index.html.erb
@@ -223,7 +223,7 @@
                 });
 
     }
-    <%= if @course %>
+    <% if @course %>
     var tagNameHtml; //当前双击的链接的父节点的html
     var tagName;  //标签的值
     var parentCssBorder; //当前双击的链接的父节点