diff --git a/Tools/ardupilotwaf/ardupilotwaf.py b/Tools/ardupilotwaf/ardupilotwaf.py
index ab21c7e2ed..5ad40da9a6 100644
--- a/Tools/ardupilotwaf/ardupilotwaf.py
+++ b/Tools/ardupilotwaf/ardupilotwaf.py
@@ -64,6 +64,8 @@ COMMON_VEHICLE_DEPENDENT_LIBRARIES = [
     'AP_ServoRelayEvents',
     'AP_Volz_Protocol',
     'AP_SBusOut',
+    'AP_IOMCU',
+    'AP_RAMTRON',
 ]
 
 def get_legacy_defines(sketch_name):