diff --git a/conf/autopilot/sitl.makefile b/conf/autopilot/sitl.makefile
index e3665330f8..4ff19ddc92 100644
--- a/conf/autopilot/sitl.makefile
+++ b/conf/autopilot/sitl.makefile
@@ -2,5 +2,5 @@ sim.ARCHDIR = $(ARCHI)
 sim.ARCH = sitl
 sim.TARGET = autopilot
 sim.TARGETDIR = autopilot
-sim.CFLAGS += -DSITL -DAP -DFBW -DRADIO_CONTROL -DINTER_MCU -DDOWNLINK -DDOWNLINK_TRANSPORT=IvyTransport -DINFRARED
-sim.srcs = radio_control.c downlink.c commands.c gps.c inter_mcu.c infrared.c pid.c nav.c estimator.c cam.c sys_time.c main_fbw.c main_ap.c $(SRC_ARCH)/ppm_hw.c $(SRC_ARCH)/sim_gps.c $(SRC_ARCH)/sim_ir.c $(SRC_ARCH)/sim_ap.c  $(SRC_ARCH)/ivy_transport.c 
+sim.CFLAGS += -DSITL -DAP -DFBW -DRADIO_CONTROL -DINTER_MCU -DDOWNLINK -DDOWNLINK_TRANSPORT=IvyTransport -DINFRARED -DRADIO_CONTROL_CALIB
+sim.srcs = radio_control.c downlink.c commands.c gps.c inter_mcu.c infrared.c pid.c nav.c estimator.c cam.c sys_time.c main_fbw.c main_ap.c if_calib.c $(SRC_ARCH)/ppm_hw.c $(SRC_ARCH)/sim_gps.c $(SRC_ARCH)/sim_ir.c $(SRC_ARCH)/sim_ap.c  $(SRC_ARCH)/ivy_transport.c