diff --git a/ArduSub/APM_Config.h b/ArduSub/APM_Config.h
index 0640f3df0c..582be2df52 100644
--- a/ArduSub/APM_Config.h
+++ b/ArduSub/APM_Config.h
@@ -22,7 +22,7 @@
 //#define CAMERA                DISABLED            // disable camera trigger to save 1k of flash
 //#define RANGEFINDER_ENABLED   DISABLED            // disable rangefinder to save 1k of flash
 //#define POSHOLD_ENABLED       DISABLED            // disable PosHold flight mode to save 4.5k of flash
-#define AC_RALLY              DISABLED            // disable rally points library (must also disable terrain which relies on rally)
+//#define AC_RALLY              DISABLED            // disable rally points library (must also disable terrain which relies on rally)
 #define AC_TERRAIN            DISABLED            // disable terrain library
 #define PARACHUTE             DISABLED            // disable parachute release to save 1k of flash
 //#define EPM_ENABLED           DISABLED            // disable epm cargo gripper to save 500bytes of flash