diff --git a/Rover/motor_test.cpp b/Rover/motor_test.cpp
index 549f3f82da..eaca91d72c 100644
--- a/Rover/motor_test.cpp
+++ b/Rover/motor_test.cpp
@@ -130,9 +130,9 @@ MAV_RESULT Rover::mavlink_motor_test_start(const GCS_MAVLINK &gcs_chan, AP_Motor
             }
 
             // disable failsafes
-            g.fs_gcs_enabled = 0;
-            g.fs_throttle_enabled = 0;
-            g.fs_crash_check = 0;
+            g.fs_gcs_enabled.set(0);
+            g.fs_throttle_enabled.set(0);
+            g.fs_crash_check.set(0);
 
             // turn on notify leds
             AP_Notify::flags.esc_calibration = true;