How to drop the "CreateDB" permission for a user?

Question

I did

ALTER USER someuser WITH CREATEDB;

How could I revoke it please? I tried

revoke CREATEDB from crawler;

Got error role "createdb" does not exist

I am on postgresql 9.6.1

Answer 1

Just alter the user again and set the opposite option:

ALTER USER someuser WITH NOCREATEDB;

That should remove the permission to create databases from the user.