diff --git a/less/_core.less b/less/_core.less
index 517053fd..68a85d77 100644
--- a/less/_core.less
+++ b/less/_core.less
@@ -55,7 +55,7 @@ legend {
   border: 0;
   box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.26);
   .divider {
-    background-color: rgba(229, 229, 229, 0.12);
+    background-color: rgba(0, 0, 0, .12);
   }
   li {
     overflow: hidden;