diff --git a/ROMFS/px4fmu_common/init.d/rcS b/ROMFS/px4fmu_common/init.d/rcS
index eba18ddb19..8cb8f4dc77 100644
--- a/ROMFS/px4fmu_common/init.d/rcS
+++ b/ROMFS/px4fmu_common/init.d/rcS
@@ -392,7 +392,7 @@ then
 		if [ $HIL == yes ]
 		then
 			sleep 1
-			set MAVLINK_FLAGS "-r 10000 -d /dev/ttyACM0 -m hil"
+			set MAVLINK_FLAGS "-r 10000 -d /dev/ttyACM0"
 			usleep 5000
 		else
 			# Normal mode, use baudrate 57600 (default) and data rate 1000 bytes/s