diff --git a/server/sensor.cc b/server/sensor.cc
index 93864e9..5e97b36 100644
--- a/server/sensor.cc
+++ b/server/sensor.cc
@@ -218,6 +218,7 @@ void Sensors::SetFromBus(string name, int addr, int active) {
 			jp.AddObject("sensor", _GetJSON(i));
 			if(network) network->ChangeListPushToAll(jp.ToString());
 		}
+		else debug (0, "* Sensor Interface:%s Addr:%d changed:%d", name.c_str(), addr, active);
 	}
 
 	jp.AddObject("infoline", "Sensor:"+name+"["+ to_string(addr) +"]");