diff --git a/selfdrive/car/mazda/carcontroller.py b/selfdrive/car/mazda/carcontroller.py
index f463caa9e..69292740f 100644
--- a/selfdrive/car/mazda/carcontroller.py
+++ b/selfdrive/car/mazda/carcontroller.py
@@ -108,7 +108,7 @@ class CarController(CarControllerBase):
     can_sends.extend(mazdacan.create_steering_control(self.packer, self.CP,
                                                       self.frame, apply_steer, CS.cam_lkas))
 
-    new_actuators = CC.actuators
+    new_actuators = CC.actuators.as_builder()
     new_actuators.steer = apply_steer / self.ccp.STEER_MAX
     new_actuators.steerOutputCan = apply_steer