diff --git a/themes/seven/style.css b/themes/seven/style.css
index 8ee4b99bb99..6d61ebd643e 100644
--- a/themes/seven/style.css
+++ b/themes/seven/style.css
@@ -437,7 +437,7 @@ table th {
   text-transform: uppercase;
   background: #e1e2dc;
   font-weight: normal;
-  border-width: 0 1px 1px 1px;
+  border-width: 1px;
   border-style: solid;
   border-color: #bebfb9;
   padding: 3px 3px 3px 10px;