diff --git a/wp-nginx-map.php b/wp-nginx-map.php
index ec241f080fc7f6b8bccc7a1761b1b31b2d154f62..c7ba8621d030b13577564ab0d9f97986a74a73dd 100644
--- a/wp-nginx-map.php
+++ b/wp-nginx-map.php
@@ -11,6 +11,9 @@ $noblogs_master = parse_url($master_url)['host'];
 define('WP_CACHE',false);
 require_once('/opt/noblogs/www/wp-load.php');
 
+// Port that the noblogs apache2 instance is listening on (as a string).
+define('NOBLOGS_PORT','92');
+
 // Return all blogs.
 function get_blogs() {
   global $wpdb;
@@ -26,10 +29,10 @@ function printline($s) {
 function backend_to_http_endpoint($backend) {
   if (substr($backend, 0, 8) != 'backend_') {
     error_log('diamine, di questo backend non so che farmene: ' . $backend);
-    return $noblogs_master . ':82';
+    return $noblogs_master . ':' . NOBLOGS_PORT;
   }
   $id = substr($backend, 8);
-  return '172.16.1.' . $id . ':82';
+  return '172.16.1.' . $id . ':' . NOBLOGS_PORT;
 }
 
 // Print the blog -> backend map.
@@ -39,7 +42,7 @@ function generate_backend_map($blogs) {
   $wpdb_hash = &$wpdb->hash_map;
 
   printline('map $http_host $backend_noblogs {');
-  printline(' default http://' . $noblogs_master . ':82;');
+  printline(' default http://' . $noblogs_master . ':' . NOBLOGS_PORT . ';');
   foreach ($blogs as $blog) {
     $blog_id = $blog->blog_id;
     if ($blog_id == 1)