diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c5825e..cfa14fc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 ## Edge (not released)
 
+* Simplify callbacks logic: no more necessity to pass `controller` variable to lambda. Thanks @BrainNya for active promotion.
+
 ## 0.3.2
 
 * Add confugurable result callback [#14][]
diff --git a/README.md b/README.md
index a8d0f07..e0e1930 100644
--- a/README.md
+++ b/README.md
@@ -48,12 +48,12 @@ To define custom success/fail callbacks you can also use the initializer:
 
     Rubykassa.configure do |config|
       ...
-      config.success_callback = -> (controller, notification) { controller.render text: 'success' }
-      config.fail_callback = -> (controller, notification) { controller.redirect_to controller.root_path }
-      config.result_callback = -> (controller, notification) { controller.render text: notification.success }
+      config.success_callback = -> (notification) { render text: 'success' }
+      config.fail_callback    = -> (notification) { redirect_to root_path }
+      config.result_callback  = -> (notification) { render text: notification.success }
     end
 
-Lambdas are called in RobokassaController so you can respond with [any kind that is supported by Rails](http://guides.rubyonrails.org/layouts_and_rendering.html#creating-responses) calling it on the `controller` variable. 
+Lambdas are called in RobokassaController so you can respond with [any kind that is supported by Rails](http://guides.rubyonrails.org/layouts_and_rendering.html#creating-responses).
 
 NOTE: `result_callback` should always return `"OK#{ invoice_id }"` string. So, implement your custom logic above `render text: notification.success` line.
 
diff --git a/app/controllers/robokassa_controller.rb b/app/controllers/robokassa_controller.rb
index 4e0f3e8..72e9d6b 100644
--- a/app/controllers/robokassa_controller.rb
+++ b/app/controllers/robokassa_controller.rb
@@ -4,22 +4,22 @@ class RobokassaController < ApplicationController
 
   def paid
     if @notification.valid_result_signature?
-      Rubykassa.result_callback.call(self, @notification)
+      instance_exec @notification, &Rubykassa.result_callback
     else
-      Rubykassa.fail_callback.call(self, @notification)
+      instance_exec @notification, &Rubykassa.fail_callback
     end
   end
 
   def success
     if @notification.valid_success_signature?
-      Rubykassa.success_callback.call(self, @notification)
+      instance_exec @notification, &Rubykassa.success_callback
     else
-      Rubykassa.fail_callback.call(self, @notification)
+      instance_exec @notification, &Rubykassa.fail_callback
     end
   end
 
   def fail
-    Rubykassa.fail_callback.call(self, @notification)
+    instance_exec @notification, &Rubykassa.fail_callback
   end
 
   private
diff --git a/lib/generators/rubykassa/templates/rubykassa.rb b/lib/generators/rubykassa/templates/rubykassa.rb
index d6ca1ce..eaef2f3 100644
--- a/lib/generators/rubykassa/templates/rubykassa.rb
+++ b/lib/generators/rubykassa/templates/rubykassa.rb
@@ -10,12 +10,12 @@
 
   # Result callback is called in RobokassaController#paid action if valid signature
   # was generated. It should always return "OK#{ invoice_id }" string, so implement
-  # your custom logic above `controller.render text: notification.success` line
+  # your custom logic above `render text: notification.success` line
 
-  config.result_callback = -> (controller, notification) { controller.render text: notification.success }
+  config.result_callback = -> (notification) { render text: notification.success }
 
   # Define success or failure callbacks here like:
 
-  # config.success_callback = -> (controller, notification) { controller.render text: 'success' }
-  # config.fail_callback = -> (controller, notification) { controller.redirect_to controller.root_path }
+  # config.success_callback = -> (notification) { render text: 'success' }
+  # config.fail_callback = -> (notification) { redirect_to root_path }
 end
diff --git a/lib/rubykassa/configuration.rb b/lib/rubykassa/configuration.rb
index 8d6272f..0e7be96 100644
--- a/lib/rubykassa/configuration.rb
+++ b/lib/rubykassa/configuration.rb
@@ -8,20 +8,14 @@ class Configuration
 
     def initialize
       self.login = "your_login"
-      self.first_password = "first_password"
-      self.second_password = "second_password"
-      self.mode = :test
-      self.http_method = :get
-      self.xml_http_method = :get
-      self.success_callback = Proc.new do |controller, notification|
-        render text: 'success'
-      end
-      self.fail_callback = Proc.new do |controller, notification|
-        render text: 'fail'
-      end
-      self.result_callback = Proc.new do |controller, notification|
-        render text: notification.success
-      end      
+      self.first_password   = "first_password"
+      self.second_password  = "second_password"
+      self.mode             = :test
+      self.http_method      = :get
+      self.xml_http_method  = :get
+      self.success_callback = -> (notification) { render text: 'success' }
+      self.fail_callback    = -> (notification) { render text: 'fail' }
+      self.result_callback  = -> (notification) { render text: notification.success   }
     end
   end
 end
\ No newline at end of file