diff --git a/posix-configs/SITL/init/rcS b/posix-configs/SITL/init/rcS
index b340096721..35bf7abd5b 100644
--- a/posix-configs/SITL/init/rcS
+++ b/posix-configs/SITL/init/rcS
@@ -44,7 +44,7 @@ attitude_estimator_q start
 position_estimator_inav start
 mc_pos_control start
 mc_att_control start
-mixer load /dev/pwm_output0 ../../ROMFS/px4fmu_common/mixers/quad_x.main.mix
+mixer load /dev/pwm_output0 ../../../../ROMFS/px4fmu_common/mixers/quad_x.main.mix
 mavlink start -u 14556 -r 2000000
 mavlink stream -r 80 -s POSITION_TARGET_LOCAL_NED -u 14556
 mavlink stream -r 80 -s LOCAL_POSITION_NED -u 14556