diff --git a/COPYING b/COPYING
index 75276195782bc43fc37635dc16abe5caf9183213..26814184b96d93f4a7c8a49ea5927a8f7d46f817 100644
--- a/COPYING
+++ b/COPYING
@@ -12,6 +12,7 @@ into the binary product as a result, you may redistribute such product and such
 product is hereby licensed under the following MIT license:
 
 Copyright (C) the ArduPilot project
+http://ardupilot.org/
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of the generated software (the "Generated Software"), to deal