diff --git a/APMrover2/Parameters.cpp b/APMrover2/Parameters.cpp
index 02e9973430..ea9730dc7d 100644
--- a/APMrover2/Parameters.cpp
+++ b/APMrover2/Parameters.cpp
@@ -567,7 +567,7 @@ ParametersG2::ParametersG2(void)
     beacon(rover.serial_manager),
     motors(rover.ServoRelayEvents),
     attitude_control(rover.ahrs),
-    smart_rtl(rover.ahrs),
+    smart_rtl(),
     fence(rover.ahrs),
     proximity(rover.serial_manager),
     avoid(rover.ahrs, fence, rover.g2.proximity, &rover.g2.beacon)