diff --git a/src/wp-admin/css/admin-menu.css b/src/wp-admin/css/admin-menu.css
index 0dc59c6e6b..7ebda68d02 100644
--- a/src/wp-admin/css/admin-menu.css
+++ b/src/wp-admin/css/admin-menu.css
@@ -63,6 +63,7 @@
 	position: relative;
 	float: left;
 	z-index: 9990;
+	outline: 1px solid transparent;
 }
 
 /* side admin menu */
diff --git a/src/wp-includes/css/admin-bar.css b/src/wp-includes/css/admin-bar.css
index c4e8ba3afa..a36db705d1 100644
--- a/src/wp-includes/css/admin-bar.css
+++ b/src/wp-includes/css/admin-bar.css
@@ -97,6 +97,7 @@ html:lang(he-il) .rtl #wpadminbar * {
 	min-width: 600px; /* match the min-width of the body in wp-admin/css/common.css */
 	z-index: 99999;
 	background: #1d2327;
+	outline: 1px solid transparent;
 }
 
 #wpadminbar .ab-sub-wrapper,