diff --git a/htdocs/expensereport/card.php b/htdocs/expensereport/card.php
index d16674f67d0..31482c341af 100644
--- a/htdocs/expensereport/card.php
+++ b/htdocs/expensereport/card.php
@@ -1390,7 +1390,7 @@ if ($action == 'create')
     	$defaultselectuser=$user->fk_user;	// Will work only if supervisor has permission to approve so is inside include_users
     	if (! empty($conf->global->EXPENSEREPORT_DEFAULT_VALIDATOR)) $defaultselectuser=$conf->global->EXPENSEREPORT_DEFAULT_VALIDATOR;   // Can force default approver
     	if (GETPOST('fk_user_validator', 'int') > 0) $defaultselectuser=GETPOST('fk_user_validator', 'int');
-    	$s=$form->select_dolusers($defaultselectuser, "fk_user_validator", 1, "", 0, $include_users);
+    	$s=$form->select_dolusers($defaultselectuser, "fk_user_validator", 1, "", ((empty($defaultselectuser) || empty($conf->global->EXPENSEREPORT_DEFAULT_VALIDATOR_UNCHANGEABLE))?0:1), $include_users);
     	print $form->textwithpicto($s, $langs->trans("AnyOtherInThisListCanValidate"));
 	}
 	print '</td>';