diff --git a/src/less/base/colorchooser/colorchooser.trigger.less b/src/less/base/colorchooser/colorchooser.trigger.less
index 20d6f268e..95739ca30 100644
--- a/src/less/base/colorchooser/colorchooser.trigger.less
+++ b/src/less/base/colorchooser/colorchooser.trigger.less
@@ -5,7 +5,7 @@
 }
 
 .bi-combo-popup {
-  .bi-color-chooser-trigger {
+  &>.bi-color-chooser-trigger {
     border-color: @color-bi-border-hover-combo;
   }
 }