diff --git a/conf/autopilot/sitl_link_xbee.makefile b/conf/autopilot/sitl_link_xbee.makefile
index 0f75875808..df2fe2e45c 100644
--- a/conf/autopilot/sitl_link_xbee.makefile
+++ b/conf/autopilot/sitl_link_xbee.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=XBeeTransport -DINFRARED -DRADIO_CONTROL_SETTINGS -DSIM_UART -DXBEE_UART=SimUart
+sim.CFLAGS += -DSITL -DAP -DFBW -DRADIO_CONTROL -DINTER_MCU -DDOWNLINK -DDOWNLINK_TRANSPORT=XBeeTransport -DINFRARED -DRADIO_CONTROL_SETTINGS -DSIM_UART -DSIM_XBEE -DXBEE_UART=SimUart
 sim.srcs = radio_control.c downlink.c xbee.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 rc_settings.c $(SRC_ARCH)/ppm_hw.c $(SRC_ARCH)/sim_gps.c $(SRC_ARCH)/sim_ir.c $(SRC_ARCH)/sim_ap.c  $(SRC_ARCH)/sim_uart.c