`watch: true` does not work with paths containing spaces

[bramus]

module.exports =
    dev:
        src: ['src/scripts/index.coffee']
        dest: 'build/scripts/admin.js'
        options:
            watch: true
            keepAlive: true
            transform: [
                [{}, 'coffeeify'],
                [config.envify.dev, 'envify']
            ]
            browserifyOptions:
                extensions: ['.coffee']
                debug: true

The snippet above does not work with a folder that contains a space in the pathname. It does work fine when moving the folder to a location containing no spaces in the pathname.