diff --git a/ROMFS/px4fmu_common/init.d-posix/airframes/10042_sihsim_xvert b/ROMFS/px4fmu_common/init.d-posix/airframes/10042_sihsim_xvert
index 45c5d7ba73..1bfde80a11 100644
--- a/ROMFS/px4fmu_common/init.d-posix/airframes/10042_sihsim_xvert
+++ b/ROMFS/px4fmu_common/init.d-posix/airframes/10042_sihsim_xvert
@@ -49,7 +49,7 @@ param set-default CA_AIRFRAME 4
 
 param set-default CA_ROTOR_COUNT 2
 param set-default CA_ROTOR0_PX 0
-param set-default CA_ROTOR0_PY 2
+param set-default CA_ROTOR0_PY 1
 param set-default CA_ROTOR0_KM 0.05
 param set-default CA_ROTOR1_PX 0
 param set-default CA_ROTOR1_PY -1
diff --git a/ROMFS/px4fmu_common/init.d-posix/airframes/1041_gazebo-classic_tailsitter b/ROMFS/px4fmu_common/init.d-posix/airframes/1041_gazebo-classic_tailsitter
index 1b9bb77115..3aa2f80b0b 100644
--- a/ROMFS/px4fmu_common/init.d-posix/airframes/1041_gazebo-classic_tailsitter
+++ b/ROMFS/px4fmu_common/init.d-posix/airframes/1041_gazebo-classic_tailsitter
@@ -13,7 +13,7 @@ param set-default CA_AIRFRAME 4
 
 param set-default CA_ROTOR_COUNT 4
 param set-default CA_ROTOR0_PX 1
-param set-default CA_ROTOR0_PY 2
+param set-default CA_ROTOR0_PY 1
 param set-default CA_ROTOR0_KM 0.05
 param set-default CA_ROTOR1_PX -1
 param set-default CA_ROTOR1_PY -1