diff --git a/components/button/demo/basic.md b/components/button/demo/basic.md
index af283c35ae..e94f1bff84 100644
--- a/components/button/demo/basic.md
+++ b/components/button/demo/basic.md
@@ -30,7 +30,6 @@ ReactDOM.render(
     <Button>Default</Button>
     <Button type="ghost">Ghost</Button>
     <Button type="dashed">Dashed</Button>
-  </div>,
-  mountNode
-);
+  </div>
+, mountNode);
 ````
diff --git a/components/style/core/iconfont.less b/components/style/core/iconfont.less
index 025dd61f8e..41ef9e12f8 100644
--- a/components/style/core/iconfont.less
+++ b/components/style/core/iconfont.less
@@ -239,5 +239,5 @@
 
 .@{iconfont-css-prefix}-spin {
   display: inline-block;
-  animation: loadingCircle 1.6s infinite linear;
+  animation: loadingCircle 0.8s infinite linear;
 }