diff --git a/src/less/base/tree/ztree.less b/src/less/base/tree/ztree.less
index c04b3fcd7..630c48b45 100644
--- a/src/less/base/tree/ztree.less
+++ b/src/less/base/tree/ztree.less
@@ -172,9 +172,6 @@
       background-color: @color-bi-background-disabled;
       &.active {
         border-color: @color-bi-border-disabled;
-        &:after {
-          opacity: 0;
-        }
       }
     }
   }