Index: wp-admin/css/wp-admin.css
===================================================================
--- wp-admin/css/wp-admin.css	(revision 22136)
+++ wp-admin/css/wp-admin.css	(working copy)
@@ -1122,6 +1122,9 @@
 	margin: 0;
 	padding: 8px 20px 12px;
 	position: relative;
+}
+
+#contextual-help-wrap {
 	overflow: auto;
 }