diff --git a/ohmpi/hardware_components/raspberry_pi.py b/ohmpi/hardware_components/raspberry_pi.py
index d8356ae7a1ff6a04041905749c4c1105068f0f62..09e0074cf52e256707b8e82a99c0de8db295ecd5 100644
--- a/ohmpi/hardware_components/raspberry_pi.py
+++ b/ohmpi/hardware_components/raspberry_pi.py
@@ -53,7 +53,7 @@ class Ctl(CtlAbstract):
 
         self.reset_modbus()
 
-    def reset_modbus(self):
+    def reset_modbus(self,**kwargs):
         # modbus
         try:
             self.interfaces['modbus'] = minimalmodbus.Instrument(port=kwargs['modbus_port'],