diff --git a/ROMFS/px4fmu_common/init.d-posix/rcS b/ROMFS/px4fmu_common/init.d-posix/rcS
index fd64860011b5..1665b4be354d 100644
--- a/ROMFS/px4fmu_common/init.d-posix/rcS
+++ b/ROMFS/px4fmu_common/init.d-posix/rcS
@@ -29,7 +29,7 @@ fi
 set VEHICLE_TYPE                none
 set LOGGER_ARGS                 ""
 set LOGGER_BUF                  1000
-
+set SDCARD_AVAILABLE            no
 set RUN_MINIMAL_SHELL           no
 
 set SYS_AUTOSTART=0