diff --git a/src/search/index.less b/src/search/index.less
index 27abf3e1d..f24bedc8f 100644
--- a/src/search/index.less
+++ b/src/search/index.less
@@ -15,7 +15,7 @@
     border-radius: @border-radius-sm;
 
     &--round {
-      border-radius: @search-input-height / 2;
+      border-radius: @border-radius-max;
     }
   }