diff --git a/src/layouts/index.less b/src/layouts/index.less
index 1a1010a5..dbe2038f 100644
--- a/src/layouts/index.less
+++ b/src/layouts/index.less
@@ -414,7 +414,7 @@ body[data-mode='phone'] header {
   }
 }
 
-.ant-pro-sider.ant-layout-sider.ant-pro-sider-fixed {
+.ant-design-pro .ant-pro-sider.ant-layout-sider.ant-pro-sider-fixed {
   box-shadow: none;
   border-right: 1px solid #eee;
 }