It's the correct British spelling - http://www.oxforddictionaries.com/definition/english/fulfil?q=fulfil http://www.oxforddictionaries.com/definition/english/fu

It's the correct British spelling - http://www.oxforddictionaries.com/definition/english/fulfil?q=fulfil http://www.oxforddictionaries.com/definition/english/fulfil?... The author lives in Netherlands so he uses the UK spelling 'fulfil' instead of US 'fulfill'.