diff --git a/ROMFS/px4fmu_common/init.d/rcS b/ROMFS/px4fmu_common/init.d/rcS
index 1e31b0e9c7..7ed8babd9a 100644
--- a/ROMFS/px4fmu_common/init.d/rcS
+++ b/ROMFS/px4fmu_common/init.d/rcS
@@ -868,7 +868,7 @@ then
 			if ver hwcmp PX4FMU_V5
 			then
 				set LOGGER_BUF 64
-				set SDLOG_MODE 3
+				param set SDLOG_MODE 3
 			fi
 			if param compare SDLOG_MODE 1
 			then