diff --git a/flight/OpenPilot/Makefile b/flight/OpenPilot/Makefile
index f82a5e1ce..d77c099cb 100644
--- a/flight/OpenPilot/Makefile
+++ b/flight/OpenPilot/Makefile
@@ -182,6 +182,8 @@ SRC += $(OPUAVOBJ)/velocityactual.c
 SRC += $(OPUAVOBJ)/guidancesettings.c
 SRC += $(OPUAVOBJ)/firmwareiapobj.c
 SRC += $(OPUAVOBJ)/ratedesired.c
+SRC += $(OPUAVOBJ)/pipxtrememodemsettings.c
+SRC += $(OPUAVOBJ)/pipxtrememodemstatus.c
 endif
 
 ## PIOS Hardware (STM32F10x)