diff --git a/includes/subdomain_mode_group.inc b/includes/subdomain_mode_group.inc
index 48b71b9..5a92f8c 100644
--- a/includes/subdomain_mode_group.inc
+++ b/includes/subdomain_mode_group.inc
@@ -31,15 +31,8 @@ class subdomain_mode_group extends subdomain_engine {
   function get_content_subdomain($nid) {
     static $subdomains;
     if (!isset($subdomains[$nid])) {
-      $sid = db_query("
-        SELECT og.etid as nid
-        FROM {field_data_group_audience} a
-          INNER JOIN {field_config_entity_type} e ON a.etid = e.etid
-          INNER JOIN {node} n ON a.entity_id = n.nid
-          INNER JOIN {og} og on a.group_audience_gid = og.gid
-        WHERE e.type = 'node' AND n.nid = :nid AND n.type NOT IN (:types)",
-        array(':nid' => $nid, ':types' => _subdomain_filtered_content_types()))
-      ->fetchField();
+      $sid = db_query("SELECT gid from og_membership where field_name = 'og_group_ref' AND etid = :nid LIMIT 1",
+        array(':nid' => $nid))->fetchField();
       $subdomains[$nid] = subdomain_get_subdomain($sid);
     }
     return $subdomains[$nid];
@@ -118,4 +111,4 @@ class subdomain_mode_group extends subdomain_engine {
     }
     drupal_set_message(format_plural($count, '1 new subdomain created.', '@count new subdomains created.'));
   }
-}
\ No newline at end of file
+}