diff --git a/addons/purchase_requisition/models/purchase_requisition.py b/addons/purchase_requisition/models/purchase_requisition.py
index c412d9f0..5c32c4a3 100644
--- a/addons/purchase_requisition/models/purchase_requisition.py
+++ b/addons/purchase_requisition/models/purchase_requisition.py
@@ -229,7 +229,9 @@ class PurchaseRequisitionLine(models.Model):
             total = 0.0
             for po in line.requisition_id.purchase_ids.filtered(lambda purchase_order: purchase_order.state in ['purchase', 'done']):
                 for po_line in po.order_line.filtered(lambda order_line: order_line.product_id == line.product_id):
-                    if po_line.product_uom != line.product_uom_id:
+                    if line.product_description_variants != po_line.name:
+                        continue
+                    elif po_line.product_uom != line.product_uom_id:
                         total += po_line.product_uom._compute_quantity(po_line.product_qty, line.product_uom_id)
                     else:
                         total += po_line.product_qty