diff --git a/htdocs/html.form.class.php b/htdocs/html.form.class.php
index 6444d77c788..41fdd2799d6 100644
--- a/htdocs/html.form.class.php
+++ b/htdocs/html.form.class.php
@@ -715,7 +715,7 @@ class Form
     function select_produits($selected='',$htmlname='productid',$filtretype='',$limit=20,$price_level=0)
     {
 		global $langs,$conf,$user;
-		if ($conf->use_ajax && $conf->PRODUIT_USE_SEARCH_TO_SELECT)
+		if ($conf->use_ajax && $conf->global->PRODUIT_USE_SEARCH_TO_SELECT)
 		{
 			print $langs->trans("Ref").':<input type="text" size="8" name="ajkeyref'.$htmlname.'" id="ajkeyref'.$htmlname.'">&nbsp; &nbsp;';
 			print $langs->trans("Label").':<input type="text" size="16" name="ajkeylabel'.$htmlname.'" id="ajkeylabel'.$htmlname.'">';