diff --git a/src/lib/list/list.scss b/src/lib/list/list.scss
index f6fd7a960656..064c7e6dd6af 100644
--- a/src/lib/list/list.scss
+++ b/src/lib/list/list.scss
@@ -157,7 +157,8 @@ md-list[dense], md-nav-list[dense] {
 
 md-divider {
   display: block;
-  border-top: 1px solid;
+  border-top-style: solid;
+  border-top-width: 1px;
   margin: 0;
 }