diff --git a/xos/synchronizer/event_steps/auth_event.py b/xos/synchronizer/event_steps/auth_event.py
index e534aee..b181121 100644
--- a/xos/synchronizer/event_steps/auth_event.py
+++ b/xos/synchronizer/event_steps/auth_event.py
@@ -31,8 +31,8 @@
     def process_event(self, event):
         value = json.loads(event.value)
 
-        onu_sn = AttHelpers.get_onu_sn(value)
-        si = AttHelpers.get_si_by_sn(onu_sn)
+        onu_sn = AttHelpers.get_onu_sn(self.log, value)
+        si = AttHelpers.get_si_by_sn(self.log, onu_sn)
         if not si:
             self.log.exception("authentication.events: Cannot find att-workflow-driver service instance for this event", kafka_event=value)
             raise Exception("authentication.events: Cannot find att-workflow-driver service instance for this event")
diff --git a/xos/synchronizer/event_steps/dhcp_event.py b/xos/synchronizer/event_steps/dhcp_event.py
index 74a7696..1b3033a 100644
--- a/xos/synchronizer/event_steps/dhcp_event.py
+++ b/xos/synchronizer/event_steps/dhcp_event.py
@@ -31,8 +31,8 @@
     def process_event(self, event):
         value = json.loads(event.value)
 
-        onu_sn = AttHelpers.get_onu_sn(value)
-        si = AttHelpers.get_si_by_sn(onu_sn)
+        onu_sn = AttHelpers.get_onu_sn(self.log, value)
+        si = AttHelpers.get_si_by_sn(self.log, onu_sn)
 
         if not si:
             self.log.exception("dhcp.events: Cannot find att-workflow-driver service instance for this event", kafka_event=value)
@@ -40,8 +40,8 @@
 
         self.log.info("dhcp.events: Got event for subscriber", event_value=value, onu_sn=onu_sn, si=si)
 
-        si.dhcp_state = value["messageType"];
-        si.ip_address = value["ipAddress"];
-        si.mac_address = value["macAddress"];
+        si.dhcp_state = value["messageType"]
+        si.ip_address = value["ipAddress"]
+        si.mac_address = value["macAddress"]
 
         si.save_changed_fields(always_update_timestamp=True)