diff --git a/src/context/service/database/models/PolicyRuleModel.py b/src/context/service/database/models/PolicyRuleModel.py
index 2f0c8a326a57a05ab1fd623a968dea0bc39d9e76..663a9a39a30903b3dd41ccfee56da19528325af0 100644
--- a/src/context/service/database/models/PolicyRuleModel.py
+++ b/src/context/service/database/models/PolicyRuleModel.py
@@ -64,7 +64,7 @@ class PolicyRuleModel(_Base):
             'deviceList': [{'device_uuid': {'uuid': pr_d.device_uuid}} for pr_d in self.policyrule_devices],
         }
         if self.policyrule_kind == PolicyRuleKindEnum.SERVICE:
-            result['serviceId'] = self.policyrule_service.dump_id(),
+            result['serviceId'] = self.policyrule_service.dump_id()
         return {self.policyrule_kind.value: result}
 
 class PolicyRuleDeviceModel(_Base):