diff --git a/htdocs/product/stock/class/mouvementstock.class.php b/htdocs/product/stock/class/mouvementstock.class.php
index e0266172463..1702c4beecc 100644
--- a/htdocs/product/stock/class/mouvementstock.class.php
+++ b/htdocs/product/stock/class/mouvementstock.class.php
@@ -515,6 +515,8 @@ class MouvementStock extends CommonObject
 			// Update PMP and denormalized value of stock qty at product level
 			if (! $error)
 			{
+				$newpmp = price2num($newpmp, 'MU');
+
 				// $sql = "UPDATE ".MAIN_DB_PREFIX."product SET pmp = ".$newpmp.", stock = ".$this->db->ifsql("stock IS NULL", 0, "stock") . " + ".$qty;
 				// $sql.= " WHERE rowid = ".$fk_product;
     			// Update pmp + denormalized fields because we change content of produt_stock. Warning: Do not use "SET p.stock", does not works with pgsql