diff --git a/wp-admin/css/ie.css b/wp-admin/css/ie.css
index 20d5a89ed3..c3de5a3e42 100644
--- a/wp-admin/css/ie.css
+++ b/wp-admin/css/ie.css
@@ -17,6 +17,10 @@ input.button, input.button-secondary, input.button-highlighted {
 }
 */
 
+#adminmenu {
+	z-index: 1;
+}
+
 #adminmenu li.wp-has-submenu {
 	margin-top: 2px;
 }
diff --git a/wp-admin/wp-admin.css b/wp-admin/wp-admin.css
index 327349e84d..6f38bdd3ec 100644
--- a/wp-admin/wp-admin.css
+++ b/wp-admin/wp-admin.css
@@ -801,7 +801,7 @@ ul#adminmenu li.write-new-button a {
 #adminmenu li .wp-submenu {
 	margin: 0;
 	position: relative;
-	z-index: 1001;
+	z-index: 11;
 }
 
 #adminmenu ul.wp-submenu li {