diff --git a/lib/resque/server.rb b/lib/resque/server.rb
index 63d741ff5..1aa773dc4 100644
--- a/lib/resque/server.rb
+++ b/lib/resque/server.rb
@@ -13,7 +13,13 @@ class Server < Sinatra::Base
     dir = File.dirname(File.expand_path(__FILE__))
 
     set :views,  "#{dir}/server/views"
-    set :public, "#{dir}/server/public"
+
+    if respond_to? :public_folder
+      set :public_folder, "#{dir}/server/public"
+    else
+      set :public, "#{dir}/server/public"
+    end
+
     set :static, true
 
     helpers do