Handlebars custom if helper else is undefined

I have a custom helper, as follows:

Handlebars.registerHelper('hasAccess', function(val, fnTrue, fnFalse) { 
    return val > 5 ? fnTrue() : fnFalse();
});

and my template, as follows:

{{#hasAccess this.access}}
    You have access!
{{else}}
    You do not have access
{{/hasAccess}}

It works, except fnFalse is undefined. So, how am I supposed to render the 'else' branch?