diff --git a/style/components/datepicker/Calendar.less b/style/components/datepicker/Calendar.less
index bf1e8476fc..79cc271c8c 100644
--- a/style/components/datepicker/Calendar.less
+++ b/style/components/datepicker/Calendar.less
@@ -282,9 +282,7 @@
     right: 9px;
 
     &-disabled {
-      color: #ccc !important;
-      background-color: #f3f5f7 !important;
-      border-color: #d9d9d9 !important;
+      .button-color(@btn-disable-color; @btn-disable-bg; @btn-disable-border);
       cursor: not-allowed;
     }
   }