diff --git a/app/assets/stylesheets/pages/diff.scss b/app/assets/stylesheets/pages/diff.scss
index afd6fb7367..e5366427f7 100644
--- a/app/assets/stylesheets/pages/diff.scss
+++ b/app/assets/stylesheets/pages/diff.scss
@@ -76,6 +76,7 @@
       width: 100%;
       font-family: $monospace_font;
       border: none;
+      border-collapse: separate;
       margin: 0px;
       padding: 0px;
       .line_holder td {