diff --git a/htdocs/supplier_proposal/class/supplier_proposal.class.php b/htdocs/supplier_proposal/class/supplier_proposal.class.php
index 769f879061c..b6ff684fa7c 100644
--- a/htdocs/supplier_proposal/class/supplier_proposal.class.php
+++ b/htdocs/supplier_proposal/class/supplier_proposal.class.php
@@ -405,7 +405,7 @@ class SupplierProposal extends CommonObject
      */
     public function addline($desc, $pu_ht, $qty, $txtva, $txlocaltax1 = 0, $txlocaltax2 = 0, $fk_product = 0, $remise_percent = 0, $price_base_type = 'HT', $pu_ttc = 0, $info_bits = 0, $type = 0, $rang = -1, $special_code = 0, $fk_parent_line = 0, $fk_fournprice = 0, $pa_ht = 0, $label = '', $array_option = 0, $ref_supplier = '', $fk_unit = '', $origin = '', $origin_id = 0, $pu_ht_devise = 0, $date_start = 0, $date_end = 0)
     {
-        global $mysoc, $conf;
+        global $mysoc, $conf, $langs;
 
         dol_syslog(get_class($this)."::addline supplier_proposalid=$this->id, desc=$desc, pu_ht=$pu_ht, qty=$qty, txtva=$txtva, fk_product=$fk_product, remise_except=$remise_percent, price_base_type=$price_base_type, pu_ttc=$pu_ttc, info_bits=$info_bits, type=$type");
         include_once DOL_DOCUMENT_ROOT.'/core/lib/price.lib.php';