diff --git a/ROMFS/px4fmu_common/init.d-posix/rcS b/ROMFS/px4fmu_common/init.d-posix/rcS
index 2ac5af5da3..1bea1b9839 100644
--- a/ROMFS/px4fmu_common/init.d-posix/rcS
+++ b/ROMFS/px4fmu_common/init.d-posix/rcS
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 # PX4 commands need the 'px4-' prefix in bash.
 # (px4-alias.sh is expected to be in the PATH)
 # shellcheck disable=SC1091