diff --git a/components/layout/style/index.less b/components/layout/style/index.less
index be5f9daee4..b7a9082dde 100644
--- a/components/layout/style/index.less
+++ b/components/layout/style/index.less
@@ -114,7 +114,7 @@
 
         &-right {
           left: -@layout-zero-trigger-width;
-          transform: rotate3d(0, 0, 1, 180deg);
+          border-radius: @border-radius-base 0 0 @border-radius-base;
         }
       }
     }