diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 29baedfc6b5..1d9b1b79520 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -1359,10 +1359,10 @@ class Form
         $sql.= " s.nom";
         $sql.= " FROM ".MAIN_DB_PREFIX."product as p";
         $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."product_fournisseur_price as pfp ON p.rowid = pfp.fk_product";
+        if ($socid) $sql.= " AND pfp.fk_soc = ".$socid;
         $sql.= " LEFT JOIN ".MAIN_DB_PREFIX."societe as s ON pfp.fk_soc = s.rowid";
         $sql.= " WHERE p.entity IN (".getEntity('product', 1).")";
         $sql.= " AND p.tobuy = 1";
-        if ($socid) $sql.= " AND pfp.fk_soc = ".$socid;
         if (strval($filtertype) != '') $sql.=" AND p.fk_product_type=".$filtertype;
         if (! empty($filtre)) $sql.=" ".$filtre;
         // Add criteria on ref/label