diff --git a/components/form/FormItem.jsx b/components/form/FormItem.jsx
index c3c28167eb..d9c248f776 100644
--- a/components/form/FormItem.jsx
+++ b/components/form/FormItem.jsx
@@ -114,8 +114,13 @@ class FormItem extends React.Component {
       this.isRequired() :
       props.required;
 
+    const className = classNames({
+      [this._getLayoutClass(labelCol)]: true,
+      required: required,
+    });
+
     return props.label ? (
-      <label htmlFor={props.id || this.getId()} className={this._getLayoutClass(labelCol)} required={required} key="label">
+      <label htmlFor={props.id || this.getId()} className={className} key="label">
         {props.label}
       </label>
     ) : null;
diff --git a/style/components/form.less b/style/components/form.less
index 0d013c6846..a2901ecce7 100644
--- a/style/components/form.less
+++ b/style/components/form.less
@@ -4,7 +4,7 @@
 
 label {
   position: relative;
-  &[required]:before {
+  &.required:before {
     display: inline-block;
     margin-right: 4px;
     content: "*";