diff --git a/libraries/SRV_Channel/SRV_Channel.h b/libraries/SRV_Channel/SRV_Channel.h
index acb6021b89205f..459d2c70ec6f59 100644
--- a/libraries/SRV_Channel/SRV_Channel.h
+++ b/libraries/SRV_Channel/SRV_Channel.h
@@ -189,6 +189,7 @@ class SRV_Channel {
         k_rcin15_mapped         = 154,
         k_rcin16_mapped         = 155,
         k_lift_release          = 156,
+        k_throttle_tilt         = 157,
         k_nr_aux_servo_functions         ///< This must be the last enum value (only add new values _before_ this one)
     } Aux_servo_function_t;