Conditional Enqueue Error

I am trying to enqueue different style sheets for one of my pages and I am getting a unexpected T_STRING, expecting ‘(‘”” syntax error. Obviously I am missing something here. Thanks in advance!

if (is_page('990')() ) {
  // Default homepage
  wp_enqueue_style( 'HomeStyle', HOMETHEME_STYLESHEET . '/homepage.css',false, 'screen' );
		if ( ! MTHEME_BUILDMODE ) {
			if ( !of_get_option('disable_googlefonts') ) {
			wp_enqueue_style( 'Lato_Font', 'http://fonts.googleapis.com/css?family=Lato:400,300,700,300italic,400italic,700italic,900' );
			}
		}
		wp_enqueue_style( 'PrettyPhoto', MTHEME_CSS . '/prettyPhoto.css', array( 'MainStyle' ), false, 'screen' );
		wp_enqueue_style( 'navMenuCSS', MTHEME_CSS . '/menu/superfish.css', array( 'MainStyle' ), false, 'screen' );
		wp_enqueue_style( 'UniformCSS', MTHEME_CSS . '/uniform/css/uniform.default.css', array( 'MainStyle' ), false, 'screen' );

} else {
  //everything else
wp_enqueue_style( 'MainStyle', MTHEME_STYLESHEET . '/style.css',false, 'screen' );
		if ( ! MTHEME_BUILDMODE ) {
			if ( !of_get_option('disable_googlefonts') ) {
			wp_enqueue_style( 'Lato_Font', 'http://fonts.googleapis.com/css?family=Lato:400,300,700,300italic,400italic,700italic,900' );
			}
		}
		wp_enqueue_style( 'PrettyPhoto', MTHEME_CSS . '/prettyPhoto.css', array( 'MainStyle' ), false, 'screen' );
		wp_enqueue_style( 'navMenuCSS', MTHEME_CSS . '/menu/superfish.css', array( 'MainStyle' ), false, 'screen' );
		wp_enqueue_style( 'UniformCSS', MTHEME_CSS . '/uniform/css/uniform.default.css', array( 'MainStyle' ), false, 'screen' );
}