diff --git a/pmpro-network-subsite.php b/pmpro-network-subsite.php
index 6dd54d5..1d1f8da 100644
--- a/pmpro-network-subsite.php
+++ b/pmpro-network-subsite.php
@@ -167,7 +167,7 @@ function pmpro_multisite_get_parent_site_pages() {
 	global $pmpro_pages;
 
 	// Only if the constant is defined try to rewrite.
-	if ( ! defined( 'PMPRO_MULSITIE_REWRITE_URLS' ) ) {
+	if ( ! defined( 'PMPRO_MULSITIE_REWRITE_URLS' ) ||  ! PMPRO_MULSITIE_REWRITE_URLS ) {
 		return;
 	}
 
@@ -192,7 +192,7 @@ function pmpro_multisite_pmpro_url( $url, $page, $querystring, $scheme ) {
 	global $pmpro_pages;
 
 	// Only if the constant is defined try to rewrite URLS.
-	if ( ! defined( 'PMPRO_MULSITIE_REWRITE_URLS' ) ) {
+	if ( ! defined( 'PMPRO_MULSITIE_REWRITE_URLS' ) ||  ! PMPRO_MULSITIE_REWRITE_URLS ) {
 		return $url;
 	}
 
@@ -211,7 +211,7 @@ function pmpro_multisite_pmpro_url( $url, $page, $querystring, $scheme ) {
 	}
 	return $url;
 }
-// add_filter( 'pmpro_url', 'pmpro_multisite_pmpro_url', 10, 4 );
+add_filter( 'pmpro_url', 'pmpro_multisite_pmpro_url', 10, 4 );
 
 
 /**