Index: wp-admin/includes/misc.php
===================================================================
--- wp-admin/includes/misc.php	(revision 16564)
+++ wp-admin/includes/misc.php	(working copy)
@@ -351,6 +351,7 @@
 			// Network admin
 			case 'sites_network_per_page':
 			case 'users_network_per_page':
+			case 'site_users_network_per_page':
 			case 'plugins_network_per_page':
 			case 'themes_network_per_page':
 			case 'site_themes_network_per_page':
Index: wp-admin/includes/class-wp-users-list-table.php
===================================================================
--- wp-admin/includes/class-wp-users-list-table.php	(revision 16564)
+++ wp-admin/includes/class-wp-users-list-table.php	(working copy)
@@ -39,7 +39,8 @@
 
 		$role = isset( $_REQUEST['role'] ) ? $_REQUEST['role'] : '';
 
-		$users_per_page = $this->get_items_per_page( 'users_per_page' );
+		$per_page = ( $this->is_site_users ) ? 'site_users_network_per_page' : 'users_per_page';
+		$users_per_page = $this->get_items_per_page( $per_page );
 
 		$paged = $this->get_pagenum();