Keystore password is too short - must be at least 6 characters for import

I wanted to use https://stackoverflow.com/a/7094044/384674 for importing pem into p12, but keystore password is 5 characters and keytool is complaining it needs to be 6 :-/

keytool -import -alias alias -keystore ./trust.p12 -storetype PKCS12 -file new.pem
Enter keystore password:
Keystore password is too short - must be at least 6 characters

edit:

There was a comment, this is not working in some of later versions of keytool but comment was removed, please be aware or let us know as I do not know version I was testing with.