diff --git a/mk/make.inc b/mk/make.inc
index 75171ddf9d..d1a79223c2 100644
--- a/mk/make.inc
+++ b/mk/make.inc
@@ -22,3 +22,5 @@ LIBRARIES += AP_RTC
 LIBRARIES += AP_ROMFS
 LIBRARIES += AC_Sprayer
 LIBRARIES += AC_Avoidance
+LIBRARIES += AP_LandingGear
+