diff --git a/tests/motors/test_motors_bus.py b/tests/motors/test_motors_bus.py
index f3af8daf..879a8c81 100644
--- a/tests/motors/test_motors_bus.py
+++ b/tests/motors/test_motors_bus.py
@@ -131,6 +131,7 @@ class MockMotorsBus(MotorsBus):
         self.port_handler = MockPortHandler(port)
 
     def _assert_protocol_is_compatible(self, instruction_name): ...
+    def _handshake(self): ...
     def configure_motors(self): ...
     def disable_torque(self, motors): ...
     def enable_torque(self, motors): ...