diff --git a/wp-admin/js/customize-nav-menus.js b/wp-admin/js/customize-nav-menus.js
index f26c34c9ae..f3ac58dd70 100644
--- a/wp-admin/js/customize-nav-menus.js
+++ b/wp-admin/js/customize-nav-menus.js
@@ -1138,7 +1138,7 @@
 			// Configure delete button.
 			$removeBtn = control.container.find( '.item-delete' );
 
-			$removeBtn.on( 'click', function( e ) {
+			$removeBtn.on( 'click', function() {
 				// Find an adjacent element to add focus to when this menu item goes away
 				var $adjacentFocusTarget;
 				if ( control.container.next().is( '.customize-control-nav_menu_item' ) ) {
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 70d32c0992..170828a0ec 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.3-alpha-32814';
+$wp_version = '4.3-alpha-32815';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.