diff --git a/xos/synchronizer/event_steps/dhcp_event.py b/xos/synchronizer/event_steps/dhcp_event.py
index d6a789f..eec273d 100644
--- a/xos/synchronizer/event_steps/dhcp_event.py
+++ b/xos/synchronizer/event_steps/dhcp_event.py
@@ -47,6 +47,9 @@
 
         # NOTE it will be better to update the SI and use the model policy to update the subscriber,
         # if this fails for any reason the event is lost
-        subscriber.ip_address = value["ipAddress"]
-        subscriber.mac_address = value["macAddress"]
-        subscriber.save()
+        if subscriber.ip_address != value["ipAddress"] or \
+            subscriber.mac_address != value["macAddress"]:
+
+            subscriber.ip_address = value["ipAddress"]
+            subscriber.mac_address = value["macAddress"]
+            subscriber.save()