diff --git a/ROMFS/px4fmu_common/init.d/rcS b/ROMFS/px4fmu_common/init.d/rcS
index 4ce6610b1f..38430f67f9 100644
--- a/ROMFS/px4fmu_common/init.d/rcS
+++ b/ROMFS/px4fmu_common/init.d/rcS
@@ -841,6 +841,11 @@ then
 	fi
 fi
 
+if ver hwcmp PX4FMU_V4
+then
+	sPort_telemetry start -d /dev/ttyS6
+fi
+
 if ver hwcmp PX4FMU_V2
 then
 	# Check for flow sensor - as it is a background task, launch it last