diff --git a/src/main/webapp/assets/common/css/gitbucket.css b/src/main/webapp/assets/common/css/gitbucket.css
index dc5d9d4..f0f8b3f 100644
--- a/src/main/webapp/assets/common/css/gitbucket.css
+++ b/src/main/webapp/assets/common/css/gitbucket.css
@@ -1248,7 +1248,6 @@
   height: 28px;
   line-height: 28px;
   text-align: center;
-  border: 2px solid #fff;
 }
 
 div.issue-reopened .octicon {