diff --git a/mailcow.conf b/mailcow.conf
index deddb33c..95d49ac3 100644
--- a/mailcow.conf
+++ b/mailcow.conf
@@ -8,6 +8,7 @@ MAILCOW_HOSTNAME=mail.example.org
 # SQL database configuration
 DBNAME=mailcow
 DBUSER=mailcow
+# Please use long, random alphanumeric strings (A-Za-z0-9)
 DBPASS=mysafepasswd
 DBROOT=myothersafepasswd