The alias 'j' currently shipped with grml-zsh-config conflicts with autojump.[1] 
User have to manually 'unalias j' to fix the behavior, but many novice zsh users 
are unaware of this and can be confused.  Please consider removing the alias in 
/etc/zsh/zshrc (line 2959).

1. https://github.com/joelthelion/autojump