diff --git a/modules/docs/src/Volo.Docs.Web/Areas/Documents/TagHelpers/TreeTagHelper.cs b/modules/docs/src/Volo.Docs.Web/Areas/Documents/TagHelpers/TreeTagHelper.cs
index 5a5567c81ec..082174e28f9 100644
--- a/modules/docs/src/Volo.Docs.Web/Areas/Documents/TagHelpers/TreeTagHelper.cs
+++ b/modules/docs/src/Volo.Docs.Web/Areas/Documents/TagHelpers/TreeTagHelper.cs
@@ -154,7 +154,7 @@ private string GetLeafNode(NavigationNode node, string content)
             
             return string.Format(LiItemTemplateWithLink,
                 listItemCss,
-                node.HasChildItems ? "chevron-right" : sb.Append("long-arrow-right ").Append(node.Path.IsNullOrEmpty() ?  "no-link" : "has-link").ToString(),
+                node.HasChildItems ? "chevron-right" : sb.Append(node.Path.IsNullOrEmpty() ?  "no-link" : "has-link").ToString(),
                 listInnerItem,
                 content);
         }