diff --git a/app/assets/javascripts/jquery.infinite-pages.js.coffee b/app/assets/javascripts/jquery.infinite-pages.js.coffee
index 74efbfd..f8a3f98 100644
--- a/app/assets/javascripts/jquery.infinite-pages.js.coffee
+++ b/app/assets/javascripts/jquery.infinite-pages.js.coffee
@@ -58,7 +58,7 @@ Released under the MIT License
     # load event if close enough
     check: ->
       nav = @$container.find(@options.navSelector)
-      if nav.size() == 0
+      if (if typeof nav.size == 'function' then nav.size() else nav.length) == 0
         @_log "No more pages to load"
       else
         windowBottom = @$context.scrollTop() + @$context.height()