diff --git a/lib/omniauth/strategies/twitch.rb b/lib/omniauth/strategies/twitch.rb
index 510334f..2888e6c 100644
--- a/lib/omniauth/strategies/twitch.rb
+++ b/lib/omniauth/strategies/twitch.rb
@@ -53,6 +53,10 @@ def access_token_options
         options.access_token_options.inject({}) { |h,(k,v)| h[k.to_sym] = v; h }
       end
 
+      def callback_url
+        full_host + script_name + callback_path
+      end
+
       def authorize_params
         super.tap do |params|
           options[:authorize_options].each do |k|