diff --git a/apps/wpm/services.py b/apps/wpm/services.py
index 8f0605b3..95dc663b 100644
--- a/apps/wpm/services.py
+++ b/apps/wpm/services.py
@@ -144,7 +144,7 @@ def update_mtask(mtask: Mtask):
     mtask.count_ok = res['sum_count_ok'] if res['sum_count_ok'] else 0
     mtask.count_notok = res['sum_count_notok'] if res['sum_count_notok'] else 0
     mtask.save()
-    utask = mtask
+    utask = mtask.utask
     if utask and mtask.material_out == utask.material:
         res2 = Mtask.objects.filter(utask=utask, material_out=utask.material_out).aggregate(sum_count_real=Sum(
             'count_real'), sum_count_ok=Sum('count_ok'), sum_count_notok=Sum('count_notok'))