diff --git a/firmware/opt/victronenergy/dbus-fzsonick-48tl/dbus-fzsonick-48tl.py b/firmware/opt/victronenergy/dbus-fzsonick-48tl/dbus-fzsonick-48tl.py
index f766b31c1..283e73bf3 100755
--- a/firmware/opt/victronenergy/dbus-fzsonick-48tl/dbus-fzsonick-48tl.py
+++ b/firmware/opt/victronenergy/dbus-fzsonick-48tl/dbus-fzsonick-48tl.py
@@ -12,7 +12,7 @@ import signals
 import config as cfg
 
 from dbus.mainloop.glib import DBusGMainLoop
-from pymodbus.client.sync import ModbusSerialClient as Modbus
+from pymodbus.client import ModbusSerialClient as Modbus
 from pymodbus.exceptions import ModbusException, ModbusIOException
 from pymodbus.other_message import ReportSlaveIdRequest
 from pymodbus.pdu import ExceptionResponse