diff --git a/wp-includes/version.php b/wp-includes/version.php
index 39f9be0c72..9edff8af2a 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.4-alpha-34909';
+$wp_version = '4.4-alpha-34910';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
diff --git a/wp-login.php b/wp-login.php
index 350363dabe..83eefe7239 100644
--- a/wp-login.php
+++ b/wp-login.php
@@ -733,8 +733,8 @@ case 'register' :
 	$user_login = '';
 	$user_email = '';
 	if ( $http_post ) {
-		$user_login = $_POST['user_login'];
-		$user_email = $_POST['user_email'];
+		$user_login = isset( $_POST['user_login'] ) ? $_POST['user_login'] : '';
+		$user_email = isset( $_POST['user_email'] ) ? $_POST['user_email'] : '';
 		$errors = register_new_user($user_login, $user_email);
 		if ( !is_wp_error($errors) ) {
 			$redirect_to = !empty( $_POST['redirect_to'] ) ? $_POST['redirect_to'] : 'wp-login.php?checkemail=registered';