diff --git a/packages/theme-chalk/src/dialog.scss b/packages/theme-chalk/src/dialog.scss
index 3a39e88ca3..61082d93b4 100644
--- a/packages/theme-chalk/src/dialog.scss
+++ b/packages/theme-chalk/src/dialog.scss
@@ -2,6 +2,7 @@
 @import 'mixins/utils';
 @import 'common/var';
 @import 'common/popup';
+@import './overlay.scss';
 
 @include b(dialog) {
   position: relative;