diff --git a/doc/posix_users/gen_size_report b/doc/posix_users/gen_size_report
index d2d1b02979..da4d303343 100644
--- a/doc/posix_users/gen_size_report
+++ b/doc/posix_users/gen_size_report
@@ -31,6 +31,10 @@ nm=${cpu}-rtems-nm
 size=${cpu}-rtems-size
 ar=${cpu}-rtems-ar
 
+#
+#  All customization should be above this point
+#
+
 check_objs()
 {
   for i in *.o