diff --git a/netutils/smtp/Make.defs b/netutils/smtp/Make.defs
index 08ee027b8..8a2184741 100644
--- a/netutils/smtp/Make.defs
+++ b/netutils/smtp/Make.defs
@@ -1,3 +1,4 @@
+############################################################################
 # apps/netutils/smtp/Make.defs
 #
 # Licensed to the Apache Software Foundation (ASF) under one or more