diff --git a/mk/make.inc b/mk/make.inc
index 2b579c855e..75171ddf9d 100644
--- a/mk/make.inc
+++ b/mk/make.inc
@@ -21,3 +21,4 @@ LIBRARIES += AP_Gripper
 LIBRARIES += AP_RTC
 LIBRARIES += AP_ROMFS
 LIBRARIES += AC_Sprayer
+LIBRARIES += AC_Avoidance