diff --git a/airtime_mvc/application/models/Preference.php b/airtime_mvc/application/models/Preference.php
index 0f330b355..5df8d878f 100644
--- a/airtime_mvc/application/models/Preference.php
+++ b/airtime_mvc/application/models/Preference.php
@@ -38,6 +38,8 @@ class Application_Model_Preference
                 $paramMap[':id'] = $userId;
             }
 
+            Application_Common_Database::prepareAndExecute("LOCK TABLE cc_pref");
+
             $result = Application_Common_Database::prepareAndExecute($sql, 
                     $paramMap, 
                     Application_Common_Database::COLUMN,