diff --git a/sites/all/modules/mailchimp/mailchimp.module b/sites/all/modules/mailchimp/mailchimp.module
index b9f5051..7ec91fd 100644
--- a/sites/all/modules/mailchimp/mailchimp.module
+++ b/sites/all/modules/mailchimp/mailchimp.module
@@ -828,7 +828,7 @@ function mailchimp_get_merge_values($uid) {
  */
 function _mailchimp_load_user_list_mergevars($uid, $list_id, $mergevars) {
   $account = mailchimp_get_merge_values($uid);
-  $lists = unserialize(variable_get('mailchimp_lists', array()));
+  $lists = variable_get('mailchimp_lists', array());
   $list = $lists[$list_id];
 
   $uservars = array(
@@ -922,7 +922,6 @@ function _mailchimp_get_available_lists($user) {
   $all_lists = variable_get('mailchimp_lists', array());
   $available_lists = array();
   if (!empty($all_lists)) {
-    $all_lists = unserialize($all_lists);
     foreach ($all_lists as $key => $list) {
       foreach ($user->roles as $rid => $info) {
         if (!empty($list->roles[$rid])) {
@@ -940,10 +939,9 @@ function _mailchimp_get_available_lists($user) {
  * Get all of the lists that the given user must be subscribed to
  */
 function _mailchimp_get_required_lists() {
-  $data = variable_get('mailchimp_lists', NULL);
+  $list = variable_get('mailchimp_lists', NULL);
   $lists = array();
   if (!empty($data)) {
-    $lists = unserialize($data);
     foreach ($lists as $key => $list) {
       if ($list->listtype !== MAILCHIMP_LISTTYPE_REQUIRED) {
         unset($lists[$key]);
@@ -975,9 +973,8 @@ function _mailchimp_get_api_object() {
  */
 function mailchimp_block_info() {
   $blocks = array();
-  $all_lists = variable_get('mailchimp_lists', array());
+  $all_lists = variable_get('mailchimp_lists', NULL);
   if (!empty($all_lists)) {
-    $all_lists = unserialize($all_lists);
     foreach ($all_lists as $key => $list) {
       // exclude required lists
       if ($list->listtype !== MAILCHIMP_LISTTYPE_REQUIRED) {