diff --git a/modules/features/dvg_domains/dvg_domains.install b/modules/features/dvg_domains/dvg_domains.install
index 56b338f..aad0167 100644
--- a/modules/features/dvg_domains/dvg_domains.install
+++ b/modules/features/dvg_domains/dvg_domains.install
@@ -1,10 +1,50 @@
 <?php
 
 /**
+ * @file
+ * Install file.
+ */
+
+/**
  * Implements hook_install().
  */
 function dvg_domains_install() {
   dvg_roles_and_permissions_set_permissions('dvg_domains');
 }
 
+/**
+ * Rename functional content variables on secondary domains.
+ */
+function dvg_domains_update_7001() {
+
+  // Get the settings for all secondary domains.
+  foreach (domain_domains() as $domain_id => $domain_settings) {
+    $data = domain_unserialize(db_query("SELECT settings FROM {domain_conf} WHERE domain_id = :domain_id", array(':domain_id' => $domain_id))->fetchField());
 
+    if (!empty($data)) {
+      // Loop through al variables to find the functional content variables.
+      foreach ($data as $variable => $value) {
+        if (strpos($variable, "functional_content") !== FALSE) {
+          // Rename the function content variable name.
+          $new_variable = str_replace(
+            array(
+              'functional_content_nodes__functional_content__nid__',
+              'functional_content_nodes__',
+              'functional_content_nid__functional_content_nid__',
+            ),
+            'functional_content_nid__',
+            $variable);
+          $data[$new_variable] = $value;
+          // Remove the old variable.
+          unset($data[$variable]);
+        }
+      }
+
+      // Save the renamed variables.
+      db_update('domain_conf')
+        ->fields(array('settings' => serialize($data)))
+        ->condition('domain_id', $domain_id)
+        ->execute();
+    }
+  }
+}