diff --git a/htdocs/compta/facture/apercu.php b/htdocs/compta/facture/apercu.php
index afe5586ab13..36802709c0a 100644
--- a/htdocs/compta/facture/apercu.php
+++ b/htdocs/compta/facture/apercu.php
@@ -189,7 +189,7 @@ if ($id > 0 || ! empty($ref))
         {
             if ($absolute_creditnote > 0)    // If not linke will be added later
             {
-                if ($object->statut == 0 && $object->type != 2 && $object->type != 3) print ' - '.$addabsolutediscount.'<br>';
+                if ($object->statut == 0 && $object->type != Facture::TYPE_CREDIT_NOTE && $object->type != Facture::TYPE_DEPOSIT) print ' - '.$addabsolutediscount.'<br>';
                 else print '.';
             }
             else print '. ';
@@ -197,9 +197,9 @@ if ($id > 0 || ! empty($ref))
         if ($absolute_creditnote > 0)
         {
             // If validated, we show link "add credit note to payment"
-            if ($object->statut != 1 || $object->type == 2 || $object->type == 3)
+            if ($object->statut != 1 || $object->type == Facture::TYPE_CREDIT_NOTE || $object->type == Facture::TYPE_DEPOSIT)
             {
-                if ($object->statut == 0 && $object->type != 3)
+                if ($object->statut == 0 && $object->type != Facture::TYPE_DEPOSIT)
                 {
                     $text=$langs->trans("CompanyHasCreditNote",price($absolute_creditnote),$langs->transnoentities("Currency".$conf->currency));
                     print $form->textwithpicto($text,$langs->trans("CreditNoteDepositUse"));
@@ -220,7 +220,7 @@ if ($id > 0 || ! empty($ref))
         if (! $absolute_discount && ! $absolute_creditnote)
         {
             print $langs->trans("CompanyHasNoAbsoluteDiscount");
-            if ($object->statut == 0 && $object->type != 2 && $object->type != 3) print ' - '.$addabsolutediscount.'<br>';
+            if ($object->statut == 0 && $object->type != Facture::TYPE_CREDIT_NOTE && $object->type != Facture::TYPE_DEPOSIT) print ' - '.$addabsolutediscount.'<br>';
             else print '. ';
         }
         /*if ($object->statut == 0 && $object->type != 2 && $object->type != 3)
@@ -242,10 +242,10 @@ if ($id > 0 || ! empty($ref))
         print '<table class="nobordernopadding" width="100%"><tr><td>';
         print $langs->trans('DateMaxPayment');
         print '</td>';
-        if ($object->type != 2 && $action != 'editpaymentterm' && $object->brouillon && $user->rights->facture->creer) print '<td align="right"><a href="'.$_SERVER["PHP_SELF"].'?action=editpaymentterm&amp;facid='.$object->id.'">'.img_edit($langs->trans('SetDate'),1).'</a></td>';
+        if ($object->type != Facture::TYPE_CREDIT_NOTE && $action != 'editpaymentterm' && $object->brouillon && $user->rights->facture->creer) print '<td align="right"><a href="'.$_SERVER["PHP_SELF"].'?action=editpaymentterm&amp;facid='.$object->id.'">'.img_edit($langs->trans('SetDate'),1).'</a></td>';
         print '</tr></table>';
         print '</td><td colspan="5">';
-        if ($object->type != 2)
+        if ($object->type != Facture::TYPE_CREDIT_NOTE)
         {
             if ($action == 'editpaymentterm')
             {
diff --git a/htdocs/compta/facture/class/facture.class.php b/htdocs/compta/facture/class/facture.class.php
index dc154b2a51f..ec86fbcbaec 100644
--- a/htdocs/compta/facture/class/facture.class.php
+++ b/htdocs/compta/facture/class/facture.class.php
@@ -68,7 +68,7 @@ class Facture extends CommonInvoice
 	var $ref_ext;
 	var $ref_int;
 	//Check constants for types
-	var $type= self::TYPE_STANDARD;
+	var $type = self::TYPE_STANDARD;
 
 	//var $amount;
 	var $remise_absolue;