diff --git a/ROMFS/px4fmu_common/init.d/rc.logging b/ROMFS/px4fmu_common/init.d/rc.logging
index dcf5bbced8..c5aef8273c 100644
--- a/ROMFS/px4fmu_common/init.d/rc.logging
+++ b/ROMFS/px4fmu_common/init.d/rc.logging
@@ -8,7 +8,7 @@ then
 	if hw_ver compare PX4FMU_V1
 	then
 		echo "Start sdlog2 at 50Hz"
-		sdlog2 start -r 50 -a -b 16 -t
+		sdlog2 start -r 50 -a -b 8 -t
 	else
 		echo "Start sdlog2 at 200Hz"
 		sdlog2 start -r 200 -a -b 16 -t