diff --git a/wp-includes/nav-menu.php b/wp-includes/nav-menu.php
index 53089a946b..38ef5c89bc 100644
--- a/wp-includes/nav-menu.php
+++ b/wp-includes/nav-menu.php
@@ -1119,6 +1119,7 @@ function wp_map_nav_menu_locations( $new_nav_menu_locations, $old_nav_menu_locat
 	$common_slug_groups = array(
 		array( 'header', 'main', 'navigation', 'primary', 'top' ),
 		array( 'bottom', 'footer', 'secondary', 'subsidiary' ),
+		array( 'social' ),
 	);
 
 	// Go through each group...
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 8125731780..ac0c2aa4a3 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-beta1-41800';
+$wp_version = '4.9-beta1-41801';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.