diff --git a/modbus/functions/Make.defs b/modbus/functions/Make.defs
index 9027dce62..979cf5d79 100644
--- a/modbus/functions/Make.defs
+++ b/modbus/functions/Make.defs
@@ -1,5 +1,5 @@
 ############################################################################
-# apps/modbus/nuttx/Make.defs
+# apps/modbus/functions/Make.defs
 #
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with