diff --git a/htdocs/product/class/product.class.php b/htdocs/product/class/product.class.php
index 94889998f26..2b6e28c55f3 100644
--- a/htdocs/product/class/product.class.php
+++ b/htdocs/product/class/product.class.php
@@ -1241,7 +1241,7 @@ class Product extends CommonObject
 							return -1;
 						}
 					}
-				} else if (! empty($conf->global->PRODUIT_PRICE_BY_QTY))
+				} else if (! empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY))
 				{
 					$sql = "SELECT price, price_ttc, price_min, price_min_ttc,";
 					$sql.= " price_base_type, tva_tx, tosell, price_by_qty, rowid";
diff --git a/htdocs/product/price.php b/htdocs/product/price.php
index 14d6600779d..390b09127e7 100644
--- a/htdocs/product/price.php
+++ b/htdocs/product/price.php
@@ -322,7 +322,7 @@ if (! empty($conf->global->PRODUIT_MULTIPRICES))
 			print '</td></tr>';
 
 			// Price by quantity
-			if($conf->global->PRODUIT_PRICE_BY_QTY) {
+			if($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY) {
 				print '<tr><td>'.$langs->trans("PriceByQuantity").' '.$i;
 				print '</td><td>';
 				
@@ -424,7 +424,7 @@ else
 	print '</td></tr>';
 	
 	// Price by quantity
-	if($conf->global->PRODUIT_PRICE_BY_QTY) {
+	if($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY) {
 		print '<tr><td>'.$langs->trans("PriceByQuantity");
 		if($object->prices_by_qty[0] == 0) {
 			print '&nbsp;<a href="'.$_SERVER['PHP_SELF'].'?id='.$object->id.'&action=activate_price_by_qty&level=1">'.$langs->trans("Activate");
@@ -699,7 +699,7 @@ if ($result)
 		{
 			print '<td align="center">'.$langs->trans("MultiPriceLevelsName").'</td>';
 		}
-		if (! empty($conf->global->PRODUIT_PRICE_BY_QTY))
+		if (! empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY))
 		{
 			print '<td align="center">'.$langs->trans("Type").'</td>';
 		}
@@ -730,7 +730,7 @@ if ($result)
 				print '<td align="center">'.$objp->price_level."</td>";
 			}
 			// Price by quantity
-			if (! empty($conf->global->PRODUIT_PRICE_BY_QTY))
+			if (! empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY))
 			{
 				$type = ($objp->price_by_qty == 1) ? 'PriceByQuantity' : 'Standard';
 				print '<td align="center">'.$langs->trans($type)."</td>";