diff --git a/Tools/ardupilotwaf/ardupilotwaf.py b/Tools/ardupilotwaf/ardupilotwaf.py
index 489130474e..196e30eaad 100644
--- a/Tools/ardupilotwaf/ardupilotwaf.py
+++ b/Tools/ardupilotwaf/ardupilotwaf.py
@@ -79,6 +79,7 @@ COMMON_VEHICLE_DEPENDENT_LIBRARIES = [
     'AC_Sprayer',
     'AC_Avoidance',
     'AP_LandingGear',
+    'AP_RobotisServo',
 ]
 
 def get_legacy_defines(sketch_name):