diff --git a/ROMFS/px4fmu_common/init.d/airframes/4061_atl_mantis_edu b/ROMFS/px4fmu_common/init.d/airframes/4061_atl_mantis_edu
index 31a8820cc8..6ef056cc8b 100644
--- a/ROMFS/px4fmu_common/init.d/airframes/4061_atl_mantis_edu
+++ b/ROMFS/px4fmu_common/init.d/airframes/4061_atl_mantis_edu
@@ -162,6 +162,7 @@ param set-default RC_MAP_AUX2       5
 param set-default RC_MAP_AUX3       10
 param set-default RC_MAP_AUX4       8
 param set-default RC_MAP_FLTMODE    6
+param set-default RC1_TRIM          1000
 
 
 # optical flow