diff --git a/kallithea/public/less/kallithea-diff.less b/kallithea/public/less/kallithea-diff.less
--- a/kallithea/public/less/kallithea-diff.less
+++ b/kallithea/public/less/kallithea-diff.less
@@ -110,7 +110,7 @@ BIN_FILENODE = 6
     padding-left: 2px;
     padding-right: 2px !important;
     width: 30px;
-    border-right: 1px solid #CCC !important;
+    border-right: 1px solid @panel-default-border !important;
     vertical-align: middle !important;
     text-align: center;
   }