diff --git a/deltatech_purchase_refund/__manifest__.py b/deltatech_purchase_refund/__manifest__.py
index b332347eb9..9cc2a3f4e5 100644
--- a/deltatech_purchase_refund/__manifest__.py
+++ b/deltatech_purchase_refund/__manifest__.py
@@ -5,7 +5,7 @@
 {
     "name": "Refund Purchase",
     "summary": "Generare factura storno pentru retururi",
-    "version": "15.0.1.0.1",
+    "version": "15.0.1.0.2",
     "author": "Terrabit, Dorin Hongu",
     "website": "https://www.terrabit.ro",
     "category": "Purchases",
diff --git a/deltatech_purchase_refund/models/purchase.py b/deltatech_purchase_refund/models/purchase.py
index 4ed039765e..a5be5eca20 100644
--- a/deltatech_purchase_refund/models/purchase.py
+++ b/deltatech_purchase_refund/models/purchase.py
@@ -11,7 +11,7 @@ class PurchaseOrder(models.Model):
     _inherit = "purchase.order"
 
     def _prepare_invoice(self):
-        invoice_vals = self._prepare_invoice()
+        invoice_vals = super()._prepare_invoice()
         invoice_type = "in_invoice"
         for line in self.order_line:
             if line.product_id.purchase_method == "purchase":