diff --git a/Tools/ardupilotwaf/ardupilotwaf.py b/Tools/ardupilotwaf/ardupilotwaf.py
index ff298e62e3..92143564d8 100644
--- a/Tools/ardupilotwaf/ardupilotwaf.py
+++ b/Tools/ardupilotwaf/ardupilotwaf.py
@@ -106,6 +106,7 @@ COMMON_VEHICLE_DEPENDENT_LIBRARIES = [
     'AP_WheelEncoder',
     'AP_ExternalAHRS',
     'AP_VideoTX',
+    'AP_FETtecOneWire',
 ]
 
 def get_legacy_defines(sketch_name):