diff --git src/wp-admin/network/settings.php src/wp-admin/network/settings.php
index d162be751b..bc194f3711 100644
--- src/wp-admin/network/settings.php
+++ src/wp-admin/network/settings.php
@@ -19,7 +19,6 @@ if ( ! current_user_can( 'manage_network_options' ) ) {
 
 // Used in the HTML title tag.
 $title       = __( 'Network Settings' );
-$parent_file = 'settings.php';
 
 // Handle network admin email change requests.
 if ( ! empty( $_GET['network_admin_hash'] ) ) {
diff --git src/wp-admin/network/site-users.php src/wp-admin/network/site-users.php
index 54d8f5bd35..7a6853ee85 100644
--- src/wp-admin/network/site-users.php
+++ src/wp-admin/network/site-users.php
@@ -50,8 +50,6 @@ if ( ! can_edit_network( $details->site_id ) ) {
 	wp_die( __( 'Sorry, you are not allowed to access this page.' ), 403 );
 }
 
-$is_main_site = is_main_site( $id );
-
 switch_to_blog( $id );
 
 $action = $wp_list_table->current_action();
diff --git src/wp-admin/network/sites.php src/wp-admin/network/sites.php
index 2aa2dbff55..5e98cfeb26 100644
--- src/wp-admin/network/sites.php
+++ src/wp-admin/network/sites.php
@@ -15,11 +15,10 @@ if ( ! current_user_can( 'manage_sites' ) ) {
 }
 
 $wp_list_table = _get_list_table( 'WP_MS_Sites_List_Table' );
-$pagenum       = $wp_list_table->get_pagenum();
+
 
 // Used in the HTML title tag.
 $title       = __( 'Sites' );
-$parent_file = 'sites.php';
 
 add_screen_option( 'per_page' );