diff --git a/AntennaTracker/Tracker.cpp b/AntennaTracker/Tracker.cpp
index 435134d618..a35a6f3251 100644
--- a/AntennaTracker/Tracker.cpp
+++ b/AntennaTracker/Tracker.cpp
@@ -82,7 +82,7 @@ void Tracker::one_second_loop()
     mavlink_system.sysid = g.sysid_this_mav;
 
     // update assigned functions and enable auxiliary servos
-    SRV_Channels::enable_aux_servos();
+    AP::srv().enable_aux_servos();
 
     // updated armed/disarmed status LEDs
     update_armed_disarmed();
diff --git a/AntennaTracker/servos.cpp b/AntennaTracker/servos.cpp
index 23e1e0cab5..5ca8bc0b54 100644
--- a/AntennaTracker/servos.cpp
+++ b/AntennaTracker/servos.cpp
@@ -8,7 +8,7 @@
 void Tracker::init_servos()
 {
     // update assigned functions and enable auxiliary servos
-    SRV_Channels::enable_aux_servos();
+    AP::srv().enable_aux_servos();
 
     SRV_Channels::set_default_function(CH_YAW, SRV_Channel::k_tracker_yaw);
     SRV_Channels::set_default_function(CH_PITCH, SRV_Channel::k_tracker_pitch);