diff --git a/less/dropdowns.less b/less/dropdowns.less
index d2a872d8c4..f6876c1a9b 100644
--- a/less/dropdowns.less
+++ b/less/dropdowns.less
@@ -185,7 +185,8 @@
   // Reverse the caret
   .caret {
     border-top: 0;
-    border-bottom: @caret-width-base solid;
+    border-bottom: @caret-width-base dashed;
+    border-bottom: @caret-width-base solid ~"\9"; // IE8
     content: "";
   }
   // Different positioning for bottom up menu