diff --git wp-admin/includes/user.php wp-admin/includes/user.php
index 1d60aa5..ea3bdbf 100644
--- wp-admin/includes/user.php
+++ wp-admin/includes/user.php
@@ -240,6 +240,9 @@ function wp_delete_user( $id, $reassign = 'novalue' ) {
 	$id = (int) $id;
 	$user = new WP_User( $id );
 
+	if ( !$user->exists() )
+		return false;
+
 	// allow for transaction statement
 	do_action('delete_user', $id);