WPMUDEV function needs edit for primary site url

Need edit for my automatic blog from username function:

// Create blogs during registration using username.
add_action( 'user_register', 'create_new_blog', 10, 1 );
function create_new_blog( $user_id ) {
$user_info = get_userdata( $user_id );
wpmu_create_blog( $user_info->user_login, '/'.$user_info->user_login.'/', $user_info->user_login, $user_id , array( 'public' => 1 ) );

The code that was made for me here:https://premium.wpmudev.org/forums/topic/automatic-blog-creation-using-username-only-users-can-register

Thanks @Ashok, @Adam Czajczyk

is creating a blog just fine, but it is using the username as the primary site name as well. Please see screenshot.

is it possible to fix this?

Thank you,