diff --git a/less/lib/App.less b/less/lib/App.less
index e2822a814..3af1afa92 100755
--- a/less/lib/App.less
+++ b/less/lib/App.less
@@ -96,6 +96,8 @@
     > .Button {
       color: @header-color;
       width: 100%;
+      overflow: hidden;
+      text-overflow: ellipsis;
     }
   }
   .App-titleControl--text {