diff --git a/migration.mk b/migration.mk
index 167a8d7..9f78a8e 100644
--- a/migration.mk
+++ b/migration.mk
@@ -2,6 +2,7 @@
 #
 # WHAT IS NEEDED FOR THE MIGRATION:
 #
+# - having done the migration process with authd (migration of the user accounts)
 # - $(SQLDB): a dump of the SQL database (format: login password domain)
 # - $(OLDBINDDIR): directory with old Bind9 zone files
 #