diff --git a/src/checkbox/index.less b/src/checkbox/index.less
index 64da9abdd..45887ee1a 100644
--- a/src/checkbox/index.less
+++ b/src/checkbox/index.less
@@ -33,7 +33,7 @@
       height: 1.25em;
       color: transparent;
       font-size: 0.8em;
-      line-height: inherit;
+      line-height: 1.25;
       text-align: center;
       border: 1px solid @checkbox-border-color;
       transition-duration: @checkbox-transition-duration;