diff --git a/conf/airframes/microjetIII.xml b/conf/airframes/microjetIII.xml
index 490e99fd39..96533d1bcd 100644
--- a/conf/airframes/microjetIII.xml
+++ b/conf/airframes/microjetIII.xml
@@ -102,13 +102,6 @@
     <define name="GLIDE_PITCH" value="45" unit="deg"/>
   </section>
 
-  <section name="external leds">
-    <!-- ADC 4 -->
-    <define name="LED_4_BANK" value="0"/>
-    <define name="LED_4_PIN" value="22"/>
-  </section>
-
-
   <section name="VERTICAL CONTROL" prefix="V_CTL_">
 
     <define name="POWER_CTL_BAT_NOMINAL" value="11.1" unit="volt"/>
@@ -182,11 +175,12 @@
  </section>
 
  <makefile>
+CONFIG=\"tiny_1_1.h\"
 include $(PAPARAZZI_SRC)/conf/autopilot/tiny.makefile
 
 FLASH_MODE=IAP
 
-ap.CFLAGS +=  -DFBW -DAP -DCONFIG=\"tiny_1_1.h\" -DLED -DTIME_LED=1
+ap.CFLAGS +=  -DFBW -DAP -DCONFIG=$(CONFIG) -DLED -DTIME_LED=1
 ap.srcs = sys_time.c $(SRC_ARCH)/sys_time_hw.c $(SRC_ARCH)/armVIC.c main_fbw.c main_ap.c main.c
 
 ap.srcs += commands.c