diff --git a/APMrover2/Rover.h b/APMrover2/Rover.h
index 7333552f77..4bc54b17d7 100644
--- a/APMrover2/Rover.h
+++ b/APMrover2/Rover.h
@@ -174,7 +174,7 @@ private:
     AP_Baro barometer;
     Compass compass;
     AP_InertialSensor ins;
-    RangeFinder rangefinder{serial_manager, ROTATION_NONE};
+    RangeFinder rangefinder{serial_manager};
     AP_Button button;
 
     // flight modes convenience array
diff --git a/APMrover2/system.cpp b/APMrover2/system.cpp
index dee4d5c65a..b617cb3d64 100644
--- a/APMrover2/system.cpp
+++ b/APMrover2/system.cpp
@@ -93,7 +93,7 @@ void Rover::init_ardupilot()
     AP::compass().init();
 
     // initialise rangefinder
-    rangefinder.init();
+    rangefinder.init(ROTATION_NONE);
 
     // init proximity sensor
     init_proximity();