diff --git a/style/components/calendar/index.less b/style/components/calendar/index.less
index 5facd38912..53c3532ace 100644
--- a/style/components/calendar/index.less
+++ b/style/components/calendar/index.less
@@ -81,7 +81,7 @@
       display: block;
       margin: 0 auto;
       color: @text-color;
-      border-radius: 4px 4px;
+      border-radius: 4px;
       width: 22px;
       height: 22px;
       padding: 0;