diff --git a/less/navigationBar.less b/less/navigationBar.less
index b4224ea7146..4b37d4884cf 100644
--- a/less/navigationBar.less
+++ b/less/navigationBar.less
@@ -78,11 +78,6 @@
 
   // Windows 7 specific styles
   &.win7 {
-    > div#window.frameless {
-      border-top-left-radius: 6px;
-      border-top-right-radius: 6px;
-    }
-
     .windowCaptionButtons {
       > .container {
         margin-right: 6px;