diff --git a/packages/smarthome/smartmeas.py b/packages/smarthome/smartmeas.py
index 3c49bf9255..0550d6a89d 100644
--- a/packages/smarthome/smartmeas.py
+++ b/packages/smarthome/smartmeas.py
@@ -512,7 +512,7 @@ def sepwattread(self) -> Tuple[int, int]:
         try:
             # neu aus openwb 2.0
             with modbus.ModbusTcpClient_(self._device_measureip, self._device_measureportsdm) as tcp_client:
-                sdm630 = sdm.Sdm630_72(self._device_measureid, tcp_client)
+                sdm630 = sdm.Sdm630_72(self._device_measureid, tcp_client, None)
                 # log.warning(" sdm630 id %s " % ( str(id(sdm630))))
                 _, newwatt = sdm630.get_power()
                 self.newwatt = int(newwatt)