diff --git a/CRM/Upgrade/Incremental/php/FourThree.php b/CRM/Upgrade/Incremental/php/FourThree.php
index a925a615b32a1c0b6bd65b1683256c3ea16dfbe3..75d44e49dac3c72e52624ece6668a5db12def09e 100644
--- a/CRM/Upgrade/Incremental/php/FourThree.php
+++ b/CRM/Upgrade/Incremental/php/FourThree.php
@@ -1101,6 +1101,7 @@ AND cli.entity_table = 'civicrm_contribution' AND cli.id IN (" . implode(',', $v
    * @return bool TRUE for success
    */
   function task_4_3_x_checkConstraints(CRM_Queue_TaskContext $ctx) {
+    CRM_Core_DAO::executeQuery('ALTER TABLE `civicrm_financial_account` CHANGE `contact_id` `contact_id` INT( 10 ) UNSIGNED NULL DEFAULT NULL');
     $config = CRM_Core_Config::singleton();
     $dbname  = DB::parseDSN($config->dsn);
     $constraintArray = array(