diff --git a/ROMFS/px4fmu_common/init.d-posix/airframes/10017_iris_ctrlalloc b/ROMFS/px4fmu_common/init.d-posix/airframes/10017_iris_ctrlalloc
index 5222b5f337..ee2fab09d9 100644
--- a/ROMFS/px4fmu_common/init.d-posix/airframes/10017_iris_ctrlalloc
+++ b/ROMFS/px4fmu_common/init.d-posix/airframes/10017_iris_ctrlalloc
@@ -46,5 +46,10 @@ param set-default CA_MC_R3_PY 0.1875
 param set-default CA_MC_R3_CT 6.5
 param set-default CA_MC_R3_KM -0.05
 
+param set-default PWM_FMU_FUNC1 101
+param set-default PWM_FMU_FUNC2 102
+param set-default PWM_FMU_FUNC3 103
+param set-default PWM_FMU_FUNC4 104
+
 set MIXER skip
 set MIXER_AUX none
diff --git a/ROMFS/px4fmu_common/init.d-posix/airframes/6012_typhoon_h480_ctrlalloc b/ROMFS/px4fmu_common/init.d-posix/airframes/6012_typhoon_h480_ctrlalloc
index 670d2b4fcd..8357ce1c67 100644
--- a/ROMFS/px4fmu_common/init.d-posix/airframes/6012_typhoon_h480_ctrlalloc
+++ b/ROMFS/px4fmu_common/init.d-posix/airframes/6012_typhoon_h480_ctrlalloc
@@ -76,6 +76,13 @@ param set-default CA_MC_R5_PY -0.5
 param set-default CA_MC_R5_CT 9.5
 param set-default CA_MC_R5_KM -0.05
 
+param set-default PWM_FMU_FUNC1 101
+param set-default PWM_FMU_FUNC2 102
+param set-default PWM_FMU_FUNC3 103
+param set-default PWM_FMU_FUNC4 104
+param set-default PWM_FMU_FUNC5 105
+param set-default PWM_FMU_FUNC6 106
+
 set MAV_TYPE 13
 
 set MIXER skip
diff --git a/ROMFS/px4fmu_common/init.d/airframes/4018_s500_ctrlalloc b/ROMFS/px4fmu_common/init.d/airframes/4018_s500_ctrlalloc
index 4343065289..f941f6e9a1 100644
--- a/ROMFS/px4fmu_common/init.d/airframes/4018_s500_ctrlalloc
+++ b/ROMFS/px4fmu_common/init.d/airframes/4018_s500_ctrlalloc
@@ -52,4 +52,8 @@ param set-default CA_MC_R3_PY 0.177
 param set-default CA_MC_R3_CT 6.5
 param set-default CA_MC_R3_KM -0.05
 
+param set-default PWM_FMU_FUNC1 101
+param set-default PWM_FMU_FUNC2 102
+param set-default PWM_FMU_FUNC3 103
+param set-default PWM_FMU_FUNC4 104
 
diff --git a/ROMFS/px4fmu_common/init.d/airframes/6003_hexa_x_ctrlalloc b/ROMFS/px4fmu_common/init.d/airframes/6003_hexa_x_ctrlalloc
index 703fa7d7a5..c122f51fd2 100644
--- a/ROMFS/px4fmu_common/init.d/airframes/6003_hexa_x_ctrlalloc
+++ b/ROMFS/px4fmu_common/init.d/airframes/6003_hexa_x_ctrlalloc
@@ -66,5 +66,12 @@ param set-default CA_MC_R5_PY -0.1375
 param set-default CA_MC_R5_CT 6.5
 param set-default CA_MC_R5_KM -0.05
 
+param set-default PWM_FMU_FUNC1 101
+param set-default PWM_FMU_FUNC2 102
+param set-default PWM_FMU_FUNC3 103
+param set-default PWM_FMU_FUNC4 104
+param set-default PWM_FMU_FUNC5 105
+param set-default PWM_FMU_FUNC6 106
+
 set MIXER skip
 set MIXER_AUX none