diff --git a/less/admin/AdminNav.less b/less/admin/AdminNav.less
index b9d3e1714..4b8975897 100644
--- a/less/admin/AdminNav.less
+++ b/less/admin/AdminNav.less
@@ -18,7 +18,7 @@
     top: @header-height;
     bottom: 0;
     width: @admin-pane-width;
-    .box-shadow(2px 2px 6px -2px @shadow-color);
+    .box-shadow(0 6px 6px @shadow-color);
     background: @body-bg;
     border-top: 1px solid @control-bg;
     z-index: @zindex-pane;