             filter     = o.el.children()
             selected   = null
 
-            selected = if includeWrapper then filter.filter(":not(.#{ o.opts.holder.class })") else filter
+            selected = if includeWrapper then filter.filter(":not(.#{ o.opts.holder.klass })") else filter
 
             selected.each ->
                 totalWidth += ($ this).outerWidth(true)

            # delegate events for non-touch devices
            unless Modernizr.touch
                # delegate the mouseleave event for hoverOut to the holder element
                o.el.on "mouseleave.#{ pluginName }", ".#{ o.opts.holder.class }", ->
                    o.dropdownTimer = window.setTimeout( ->
                        o.dropdownWrapper.trigger "hide.#{ pluginName }"
                    , o.opts.hoverTimeout)


            # set the positioning of the dropdown menu
            holderOffset = o.el
                .find(".#{ o.opts.holder.klass }")
                .offset()

            if typeof holderOffset isnt "undefined"
