diff --git a/hb_server/apps/inm/services.py b/hb_server/apps/inm/services.py
index 3bff1ac..c9fbbeb 100644
--- a/hb_server/apps/inm/services.py
+++ b/hb_server/apps/inm/services.py
@@ -22,8 +22,8 @@ class InmService:
                     defaults={'material':material, 'warehouse':warehouse, 'count':0, 'batch':i.batch})
                 o2.count = o2.count + i.count
                 o2.save()
-                
-                iv = Inventory.objects.get_or_create(material=material, warehouse=warehouse, \
+
+                iv, _= Inventory.objects.get_or_create(material=material, warehouse=warehouse, \
                     defaults={'material':material, 'warehouse':warehouse, 'count':0})
                 iv.count = MaterialBatch.objects.filter(material=material, warehouse=warehouse).count()
                 iv.save()