diff --git a/htdocs/fourn/class/fournisseur.product.class.php b/htdocs/fourn/class/fournisseur.product.class.php
index eaff46ddc2c..94034408e49 100644
--- a/htdocs/fourn/class/fournisseur.product.class.php
+++ b/htdocs/fourn/class/fournisseur.product.class.php
@@ -310,7 +310,7 @@ class ProductFournisseur extends Product
                     $error++;
                 }
                 
-                if (! $error && ! empty($conf->global->PRODUCT_PRICE_SUPPLIER_NO_LOG)) {
+                if (! $error && empty($conf->global->PRODUCT_PRICE_SUPPLIER_NO_LOG)) {
                     // Add record into log table
                     $sql = "INSERT INTO " . MAIN_DB_PREFIX . "product_fournisseur_price_log(";
                     $sql .= "datec, fk_product_fournisseur,fk_user,price,quantity)";