diff --git a/htdocs/comm/propal/card.php b/htdocs/comm/propal/card.php
index c7e4f538103..bf0c691084f 100644
--- a/htdocs/comm/propal/card.php
+++ b/htdocs/comm/propal/card.php
@@ -843,7 +843,7 @@ if (empty($reshook))
 					}
 				}
 				// If price per quantity and customer
-				elseif (! empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY&PRODUIT_MULTIPRICES))
+				elseif (! empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY_MULTIPRICES))
 				{
 					// TODO Same than PRODUIT_CUSTOMER_PRICES_BY_QTY but using $object->thirdparty->price_level
 				}
diff --git a/htdocs/commande/card.php b/htdocs/commande/card.php
index 29134010dd6..2d4d138f61a 100644
--- a/htdocs/commande/card.php
+++ b/htdocs/commande/card.php
@@ -803,7 +803,7 @@ if (empty($reshook))
 					}
 				}
 				// If price per quantity and customer
-				elseif (! empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY&PRODUIT_MULTIPRICES))
+				elseif (! empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY_MULTIPRICES))
 				{
 					// TODO Same than PRODUIT_CUSTOMER_PRICES_BY_QTY but using $object->thirdparty->price_level
 				}
diff --git a/htdocs/compta/facture/card.php b/htdocs/compta/facture/card.php
index 5207ca83b91..234ccf281f0 100644
--- a/htdocs/compta/facture/card.php
+++ b/htdocs/compta/facture/card.php
@@ -1706,7 +1706,7 @@ if (empty($reshook))
 					}
 				}
 				// If price per quantity and customer
-				elseif (! empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY&PRODUIT_MULTIPRICES))
+				elseif (! empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY_MULTIPRICES))
 				{
 					// TODO Same than PRODUIT_CUSTOMER_PRICES_BY_QTY but using $object->thirdparty->price_level
 				}
diff --git a/htdocs/product/admin/product.php b/htdocs/product/admin/product.php
index abfe82d0dff..e4b904b33b0 100644
--- a/htdocs/product/admin/product.php
+++ b/htdocs/product/admin/product.php
@@ -56,8 +56,8 @@ $select_pricing_rules=array(
 );
 $keyforparam='PRODUIT_CUSTOMER_PRICES_BY_QTY';
 if ($conf->global->MAIN_FEATURES_LEVEL >= 2 || ! empty($conf->global->$keyforparam)) $select_pricing_rules['PRODUIT_CUSTOMER_PRICES_BY_QTY'] = $langs->trans('PriceByQuantity').' ('.$langs->trans("VersionExperimental").')';	// TODO If this is enabled, price must be hidden when price by qty is enabled, also price for quantity must be used when adding product into order/propal/invoice
-$keyforparam='PRODUIT_CUSTOMER_PRICES_BY_QTY&PRODUIT_MULTIPRICES';
-if ($conf->global->MAIN_FEATURES_LEVEL >= 2 || ! empty($conf->global->$keyforparam)) $select_pricing_rules['PRODUIT_CUSTOMER_PRICES_BY_QTY&PRODUIT_MULTIPRICES'] = $langs->trans('MultiPricesAbility') . '+' . $langs->trans('PriceByQuantity').' ('.$langs->trans("VersionExperimental").')';
+$keyforparam='PRODUIT_CUSTOMER_PRICES_BY_QTY_MULTIPRICES';
+if ($conf->global->MAIN_FEATURES_LEVEL >= 2 || ! empty($conf->global->$keyforparam)) $select_pricing_rules['PRODUIT_CUSTOMER_PRICES_BY_QTY_MULTIPRICES'] = $langs->trans('MultiPricesAbility') . '+' . $langs->trans('PriceByQuantity').' ('.$langs->trans("VersionExperimental").')';
 
 // Clean param
 if (! empty($conf->global->PRODUIT_MULTIPRICES) && empty($conf->global->PRODUIT_MULTIPRICES_LIMIT)) {
@@ -553,7 +553,7 @@ $current_rule = 'PRODUCT_PRICE_UNIQ';
 if (!empty($conf->global->PRODUIT_MULTIPRICES)) $current_rule='PRODUIT_MULTIPRICES';
 if (!empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY)) $current_rule='PRODUIT_CUSTOMER_PRICES_BY_QTY';
 if (!empty($conf->global->PRODUIT_CUSTOMER_PRICES)) $current_rule='PRODUIT_CUSTOMER_PRICES';
-if ((!empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY)) && (!empty($conf->global->PRODUIT_MULTIPRICES))) $current_rule='PRODUIT_CUSTOMER_PRICES_BY_QTY&PRODUIT_MULTIPRICES';
+if ((!empty($conf->global->PRODUIT_CUSTOMER_PRICES_BY_QTY)) && (!empty($conf->global->PRODUIT_MULTIPRICES))) $current_rule='PRODUIT_CUSTOMER_PRICES_BY_QTY_MULTIPRICES';
 print $form->selectarray("princingrule",$select_pricing_rules,$current_rule);
 if ( empty($conf->multicompany->enabled))
 {