diff --git a/ROMFS/px4fmu_common/init.d/rc.sensors b/ROMFS/px4fmu_common/init.d/rc.sensors
index ecb408a543..739df7ac0b 100644
--- a/ROMFS/px4fmu_common/init.d/rc.sensors
+++ b/ROMFS/px4fmu_common/init.d/rc.sensors
@@ -68,6 +68,11 @@ else
 	fi
 fi
 
+# Check for flow sensor
+if px4flow start
+then
+fi
+
 #
 # Start the sensor collection task.
 # IMPORTANT: this also loads param offsets
diff --git a/ROMFS/px4fmu_common/init.d/rcS b/ROMFS/px4fmu_common/init.d/rcS
index 6aa542a295..fa5e8bf7c3 100644
--- a/ROMFS/px4fmu_common/init.d/rcS
+++ b/ROMFS/px4fmu_common/init.d/rcS
@@ -450,7 +450,7 @@ then
 	#
 	if ver hwcmp PX4FMU_V2
 	then
-		mavlink start -d /dev/ttyS2 -b 230400
+		mavlink start -d /dev/ttyS2 -b 230400 -m onboard
 	fi
 
 	# UAVCAN