diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 3e704816d5c..1f3883738d1 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -2800,7 +2800,9 @@ class Form
 
 
     /**
-     *      Return list of payment modes
+     *      Return list of payment modes.
+     *      Constant MAIN_DEFAULT_PAYMENT_TERM_ID can used to set default value but scope is all application, probably not what you want.
+     *      See instead to force the default value by the caller.
      *
      *      @param	int  	$selected        Id of payment term to preselect by default
      *      @param  string	$htmlname        Nom de la zone select
diff --git a/htdocs/fourn/commande/card.php b/htdocs/fourn/commande/card.php
index 828809d43d3..fa4fa4c8295 100644
--- a/htdocs/fourn/commande/card.php
+++ b/htdocs/fourn/commande/card.php
@@ -1371,7 +1371,7 @@ if ($action=='create')
 		$ref_client = (! empty($objectsrc->ref_client) ? $objectsrc->ref_client : '');
 
 		$soc = $objectsrc->client;
-		$cond_reglement_id	= (!empty($objectsrc->cond_reglement_id)?$objectsrc->cond_reglement_id:(!empty($soc->cond_reglement_id)?$soc->cond_reglement_id:1));
+		$cond_reglement_id	= (!empty($objectsrc->cond_reglement_id)?$objectsrc->cond_reglement_id:(!empty($soc->cond_reglement_id)?$soc->cond_reglement_id:0));
 		$mode_reglement_id	= (!empty($objectsrc->mode_reglement_id)?$objectsrc->mode_reglement_id:(!empty($soc->mode_reglement_id)?$soc->mode_reglement_id:0));
         $fk_account         = (! empty($objectsrc->fk_account)?$objectsrc->fk_account:(! empty($soc->fk_account)?$soc->fk_account:0));
 		$availability_id	= (!empty($objectsrc->availability_id)?$objectsrc->availability_id:(!empty($soc->availability_id)?$soc->availability_id:0));
@@ -1407,6 +1407,9 @@ if ($action=='create')
 		$note_public = $object->getDefaultCreateValueFor('note_public');
 	}
 
+	// If not defined, set default value from constant
+	if (empty($cond_reglement_id) && ! empty($conf->global->SUPPLIER_ORDER_DEFAULT_PAYMENT_TERM_ID)) $cond_reglement_id=$conf->global->SUPPLIER_ORDER_DEFAULT_PAYMENT_TERM_ID;
+
 	print '<form name="add" action="'.$_SERVER["PHP_SELF"].'" method="post">';
 	print '<input type="hidden" name="token" value="'.$_SESSION['newtoken'].'">';
 	print '<input type="hidden" name="action" value="add">';