diff --git a/htdocs/includes/modules/modFacture.class.php b/htdocs/includes/modules/modFacture.class.php
index a30078b48e5..c9ed19608af 100644
--- a/htdocs/includes/modules/modFacture.class.php
+++ b/htdocs/includes/modules/modFacture.class.php
@@ -57,6 +57,8 @@ class modFacture
     $const[5][1] = "chaine";
     $const[6][0] = "FAC_PDF_INTITULE2";
     $const[6][1] = "chaine";
+    $const[7][0] = "FACTURE_ADDON_PDF";
+    $const[7][1] = "tourteau";
 
     foreach ($const as $key => $value)
       {