diff --git a/src/core/style/_corner.scss b/src/core/style/_corner.scss
index 5dcf34d74b..0d410e9d6c 100644
--- a/src/core/style/_corner.scss
+++ b/src/core/style/_corner.scss
@@ -45,7 +45,7 @@ $corner-semicircle: 500px !default;
 /// @semantic 直角
 /// @export
 /// @unconfigurable
-$corner-zero: 0 !default;
+$corner-zero: 0px !default;
 
 // ----------- patch ----------- //
 $corner-right-angle: $corner-zero;