diff --git a/components/button/button.tsx b/components/button/button.tsx
index b9aef4508d..cf03e58fe7 100644
--- a/components/button/button.tsx
+++ b/components/button/button.tsx
@@ -86,7 +86,7 @@ export default class Button extends React.Component<ButtonProps, any> {
   };
 
   static propTypes = {
-    type: PropTypes.oneOf(ButtonTypes),
+    type: PropTypes.string,
     shape: PropTypes.oneOf(ButtonShapes),
     size: PropTypes.oneOf(ButtonSizes),
     htmlType: PropTypes.oneOf(ButtonHTMLTypes),