diff --git a/htdocs/fourn/class/fournisseur.commande.class.php b/htdocs/fourn/class/fournisseur.commande.class.php
index 4eccc21cd93..3edb70b1ed6 100644
--- a/htdocs/fourn/class/fournisseur.commande.class.php
+++ b/htdocs/fourn/class/fournisseur.commande.class.php
@@ -1430,7 +1430,7 @@ class CommandeFournisseur extends CommonOrder
                         // We use 'none' instead of $fourn_ref, because fourn_ref may not exists anymore. So we will take the first supplier price ok.
                         // If we want a dedicated supplier price, we must provide $fk_prod_fourn_price.
                         $result=$prod->get_buyprice($fk_prod_fourn_price, $qty, $fk_product, 'none', ($this->fk_soc?$this->fk_soc:$this->socid));   // Search on couple $fk_prod_fourn_price/$qty first, then on triplet $qty/$fk_product/$fourn_ref/$this->fk_soc
-                        if ($result > 0)
+                        if ($result > 0 && $origin !== 'supplier_proposal')
                         {
 			    $pu           = $prod->fourn_pu;       // Unit price supplier price set by get_buyprice
                             $ref_supplier = $prod->ref_supplier;   // Ref supplier price set by get_buyprice