diff --git a/mk/mavgen.mk b/mk/mavgen.mk
index 6bbd617b6b..4a43ea7ada 100644
--- a/mk/mavgen.mk
+++ b/mk/mavgen.mk
@@ -5,7 +5,7 @@ MESSAGE_DEFINITIONS := $(SKETCHBOOK)/modules/mavlink/message_definitions/v1.0
 MAVLINK_HEADERS := $(BUILDROOT)/libraries/GCS_MAVLink/include/mavlink/v1.0/ardupilotmega/mavlink.h $(wildcard $(BUILDROOT)/libraries/GCS_MAVLink/include/mavlink/v1.0/,*.h) $(wildcard $(BUILDROOT)/libraries/GCS_MAVLink/include/mavlink/v1.0/ardupilotmega,*.h)
 MAVLINK_OUTPUT_DIR := $(BUILDROOT)/libraries/GCS_MAVLink/include/mavlink/v1.0
 
-$(MAVLINK_HEADERS): CHECK_MODULES $(MESSAGE_DEFINITIONS)/ardupilotmega.xml $(MESSAGE_DEFINITIONS)/common.xml
+$(MAVLINK_HEADERS): $(MESSAGE_DEFINITIONS)/ardupilotmega.xml $(MESSAGE_DEFINITIONS)/common.xml
 	echo "Generating MAVLink headers..."
 	#goto mavlink module directory and run the most recent generator script
 	echo "Generating C code using mavgen.py located at" $(SKETCHBOOK)/modules/mavlink/