diff --git a/conf/airframes/booz2_flixr.xml b/conf/airframes/booz2_flixr.xml
index 5f77c3262b..d8730a730d 100644
--- a/conf/airframes/booz2_flixr.xml
+++ b/conf/airframes/booz2_flixr.xml
@@ -1,5 +1,11 @@
 <airframe name="BOOZ2_F1">
 
+	<modules main_freq="512">
+    		<load name="booz_drop.xml"/>
+    		<!--load name="booz_cam.xml"/-->
+    		<!--load name="sonar_maxbotix_booz.xml"/-->
+  	</modules>
+
 	<servos min="0" neutral="0" max="0xff">
 		<servo name="FRONT" no="0" min="0" neutral="0" max="255" />
 		<servo name="BACK" no="1" min="0" neutral="0" max="255" />
@@ -230,6 +236,12 @@
 		ap.CFLAGS += -DUSE_GPS_ACC4R
         #ap.CFLAGS += -DGPS_LAG=0.3
 
+        ap.srcs += $(SRC_BOOZ_ARCH)/booz2_pwm_hw.c
+        sim.srcs += $(SRC_BOOZ_SIM)/booz2_pwm_hw.c
+
+        ap.CFLAGS += -DUSEMODULES
+        sim.CFLAGS += -DUSEMODULES
+
         ap.CFLAGS += -DB2_GUIDANCE_H_USE_REF
         sim.CFLAGS += -DB2_GUIDANCE_H_USE_REF
 
diff --git a/conf/modules/booz_drop.xml b/conf/modules/booz_drop.xml
index 006cfe1e5b..139cbc78ef 100644
--- a/conf/modules/booz_drop.xml
+++ b/conf/modules/booz_drop.xml
@@ -9,6 +9,8 @@
   <periodic fun="booz_drop_periodic()" freq="10."/>
   <makefile>
     <flag name="USE_DROP"/>
+    <flag name="DROP_SERVO_OPEN" value="1700"/>
+    <flag name="DROP_SERVO_CLOSED" value="900"/>
     <file name="booz_drop.c"/>
   </makefile>
 </module>
diff --git a/sw/airborne/modules/drop/booz_drop.c b/sw/airborne/modules/drop/booz_drop.c
index 1b640ecd04..1d9623e0e9 100644
--- a/sw/airborne/modules/drop/booz_drop.c
+++ b/sw/airborne/modules/drop/booz_drop.c
@@ -28,8 +28,12 @@
 bool_t booz_drop_ball;
 int16_t booz_drop_servo;
 
+#ifndef DROP_SERVO_OPEN
 #define DROP_SERVO_OPEN 1700
+#endif
+#ifndef DROP_SERVO_CLOSED
 #define DROP_SERVO_CLOSED 900
+#endif
 
 void booz_drop_init(void) {
   booz_drop_ball = FALSE;