diff --git a/less/dropdowns.less b/less/dropdowns.less
index 1e4f33ff6b..5f62d27f04 100644
--- a/less/dropdowns.less
+++ b/less/dropdowns.less
@@ -60,8 +60,8 @@
   margin: 1px 0 0; // override default ul
   list-style: none;
   background-color: @dropdownBackground;
-  border: 1px solid #ccc;
-  border: 1px solid rgba(0,0,0,.2);
+  border: 1px solid #ccc; // Fallback for IE7-8
+  border: 1px solid @dropdownBorder;
   *border-right-width: 2px;
   *border-bottom-width: 2px;
   .border-radius(6px);