diff --git a/ArduCopter/APM_Config.h b/ArduCopter/APM_Config.h
index b625790547..b93fd47759 100644
--- a/ArduCopter/APM_Config.h
+++ b/ArduCopter/APM_Config.h
@@ -12,6 +12,7 @@
 //#define RANGEFINDER_ENABLED   DISABLED            // disable rangefinder to save 1k of flash
 //#define PROXIMITY_ENABLED     DISABLED            // disable proximity sensors
 //#define AC_RALLY              DISABLED            // disable rally points library (must also disable terrain which relies on rally)
+//#define AC_AVOID_ENABLED      DISABLED            // disable stop-at-fence library
 //#define AC_TERRAIN            DISABLED            // disable terrain library
 //#define PARACHUTE             DISABLED            // disable parachute release to save 1k of flash
 //#define NAV_GUIDED            DISABLED            // disable external navigation computer ability to control vehicle through MAV_CMD_NAV_GUIDED mission commands
@@ -21,6 +22,7 @@
 //#define ADSB_ENABLED          DISABLED            // disable ADSB support
 //#define PRECISION_LANDING     DISABLED            // disable precision landing using companion computer or IRLock sensor
 //#define SPRAYER               DISABLED            // disable the crop sprayer feature (two ESC controlled pumps the speed of which depends upon the vehicle's horizontal velocity)
+//#define WINCH_ENABLED         DISABLED            // disable winch support
 
 // features below are disabled by default on all boards
 //#define CAL_ALWAYS_REBOOT                         // flight controller will reboot after compass or accelerometer calibration completes