diff --git a/lib/ipizza/payment.rb b/lib/ipizza/payment.rb
index 4594ed3..defa03f 100644
--- a/lib/ipizza/payment.rb
+++ b/lib/ipizza/payment.rb
@@ -1,7 +1,7 @@
 module Ipizza
   class Payment
     
-    attr_accessor :provider, :stamp, :amount, :currency, :refnum, :receiver_account, :receiver_name, :sender_account, :sender_name, :message, :transaction_id, :transaction_time
+    attr_accessor :provider, :stamp, :amount, :currency, :refnum, :receiver_account, :receiver_name, :sender_account, :sender_name, :message, :transaction_id, :transaction_time, :return_url, :cancel_url
     
     def initialize(attribs = {})
       attribs.each do |key, value|
diff --git a/lib/ipizza/provider/base.rb b/lib/ipizza/provider/base.rb
index 9b97cce..a31cd4b 100644
--- a/lib/ipizza/provider/base.rb
+++ b/lib/ipizza/provider/base.rb
@@ -19,8 +19,8 @@ def payment_request(payment, service_no = 1012)
         'VK_CURR' => payment.currency,
         'VK_REF' => Ipizza::Util.sign_731(payment.refnum),
         'VK_MSG' => payment.message,
-        'VK_RETURN' => self.class.return_url,
-        'VK_CANCEL' => self.class.cancel_url,
+        'VK_RETURN' => (payment.return_url || self.class.return_url),
+        'VK_CANCEL' => (payment.cancel_url || self.class.cancel_url),
         'VK_DATETIME' => Ipizza::Util.time_to_iso8601(Time.now)
       }
 
diff --git a/spec/ipizza/provider_spec.rb b/spec/ipizza/provider_spec.rb
index d38987b..82efb31 100644
--- a/spec/ipizza/provider_spec.rb
+++ b/spec/ipizza/provider_spec.rb
@@ -45,5 +45,23 @@
     it 'returns nothing for "unkn" attribute' do
       Ipizza::Provider.get('unkn').should be_nil
     end
+
+    describe '#payment_request' do
+      let(:payment) { Ipizza::Payment.new(stamp: 1, amount: '123.34', refnum: 1, message: 'Payment message', currency: 'EUR') }
+      before(:each) do
+        Ipizza::PaymentRequest.any_instance.stub(:sign)
+      end
+
+      it 'should assign return_url from payment' do
+        payment.return_url = "new url"
+        Ipizza::Provider::Base.new.payment_request(payment).sign_params['VK_RETURN'].should == "new url"
+      end
+
+      it 'should assign cancel_url from payment' do
+        payment.cancel_url = "new url"
+        Ipizza::Provider::Base.new.payment_request(payment).sign_params['VK_CANCEL'].should == "new url"
+      end
+
+    end
   end
 end