diff --git a/mqtt_ros_bridge/bridge_node.py b/mqtt_ros_bridge/bridge_node.py
index e4ea604..148fe4e 100644
--- a/mqtt_ros_bridge/bridge_node.py
+++ b/mqtt_ros_bridge/bridge_node.py
@@ -7,7 +7,6 @@
 from rclpy._rclpy_pybind11 import RMWError
 from rclpy.node import Node
 from rclpy.publisher import Publisher
-from std_msgs.msg import String
 
 from mqtt_ros_bridge.msg_typing import MsgLikeT
 from mqtt_ros_bridge.serializer import ROSDefaultSerializer, Serializer
diff --git a/mqtt_ros_bridge/util.py b/mqtt_ros_bridge/util.py
index 893171b..a8160fe 100644
--- a/mqtt_ros_bridge/util.py
+++ b/mqtt_ros_bridge/util.py
@@ -1,9 +1,7 @@
 from importlib import import_module
 
-from mqtt_ros_bridge.msg_typing import MsgLike
 
-
-def lookup_object(object_path: str, package: str = 'mqtt_ros_bridge') -> type[MsgLike]:
+def lookup_object(object_path: str, package: str = 'mqtt_ros_bridge') -> object:
     """ lookup object from a some.module:object_name specification. """
     module_name, obj_name = object_path.split(":")
     module = import_module(module_name, package)