diff --git a/ROMFS/px4fmu_common/init.d/rcS b/ROMFS/px4fmu_common/init.d/rcS
index ea3f721f34..9118f26013 100644
--- a/ROMFS/px4fmu_common/init.d/rcS
+++ b/ROMFS/px4fmu_common/init.d/rcS
@@ -436,7 +436,7 @@ then
 	then
 		if param compare SYS_COMPANION 921600
 		then
-			mavlink start -d /dev/ttyS2 -b 921600 -m onboard
+			mavlink start -d /dev/ttyS2 -b 921600 -m onboard -r 20000
 		fi
 	fi