diff --git a/domains.php b/domains.php
index 0adb886..d14a31d 100644
--- a/domains.php
+++ b/domains.php
@@ -1,16 +1,13 @@
 <?php
 $wiki_allow_domains = array(
     "wikitolearn.org",
-    "wikitolearn.vodka",
-    "wikitolearn-test.org",
-    "broken-site.org",
-    "tuttorotto.biz"
+    getenv('WTL_DOMAIN_NAME')
 );
 
 $wiki_hostname = strtolower(isset($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : getenv('WIKI'));
 $wiki = substr($wiki_hostname, 0, strpos($wiki_hostname, "."));
 $wiki_domain = substr($wiki_hostname, strlen($wiki) + 1);
 
 if(in_array($wiki_hostname,$wiki_allow_domains)) {
  $wiki_domain = $wiki_hostname;
 }