diff --git a/apps/pos_device/web/api/v1/serilaizers/device.py b/apps/pos_device/web/api/v1/serilaizers/device.py
index ee5d96a..98ce6ff 100644
--- a/apps/pos_device/web/api/v1/serilaizers/device.py
+++ b/apps/pos_device/web/api/v1/serilaizers/device.py
@@ -103,7 +103,7 @@ class StakeHolderShareAmountSerializer(ModelSerializer):
 
         # check organization has pos device
         assigned_organization = pos_models.Organization.objects.get(
-            id=attrs['distribution'].assigned_organization
+            id=attrs['distribution']['assigned_organization']
         )
         if not assigned_organization.has_pos:
             raise pos_exceptions.OrganizationDeviceNotAssigned()