diff --git a/CRM/Member/Form/Membership.php b/CRM/Member/Form/Membership.php
index 32018d525d7d..b81bc5ec3bb6 100644
--- a/CRM/Member/Form/Membership.php
+++ b/CRM/Member/Form/Membership.php
@@ -947,7 +947,7 @@ private function prepareStatusOverrideValues() {
    * the selected override option is not 'until date'.
    */
   private function setOverrideDateValue() {
-    if (!CRM_Member_StatusOverrideTypes::isUntilDate($this->_params['is_override'])) {
+    if (!CRM_Member_StatusOverrideTypes::isUntilDate(CRM_Utils_Array::value('is_override', $this->_params))) {
       $this->_params['status_override_end_date'] = '';
     }
   }