diff --git a/activesupport/CHANGELOG.md b/activesupport/CHANGELOG.md
index 7701e0a7a2..8cff374a47 100644
--- a/activesupport/CHANGELOG.md
+++ b/activesupport/CHANGELOG.md
@@ -42,44 +42,44 @@
     Here's an example of a simple event tracking system where the object being tracked needs not pass a creator that it
     doesn't need itself along:
 
-    module Current
-      thread_mattr_accessor :account
-      thread_mattr_accessor :user
+        module Current
+          thread_mattr_accessor :account
+          thread_mattr_accessor :user
 
-      def self.reset() self.account = self.user = nil end
-    end
-
-    class ApplicationController < ActionController::Base
-      before_action :set_current
-      after_action { Current.reset }
-
-      private
-        def set_current
-          Current.account = Account.find(params[:account_id])
-          Current.user    = Current.account.users.find(params[:user_id])
+          def self.reset() self.account = self.user = nil end
         end
-    end
 
-    class MessagesController < ApplicationController
-      def create
-        @message = Message.create!(message_params)
-      end
-    end
+        class ApplicationController < ActionController::Base
+          before_action :set_current
+          after_action { Current.reset }
 
-    class Message < ApplicationRecord
-      has_many :events
-      after_create :track_created
-
-      private
-        def track_created
-          events.create! origin: self, action: :create
+          private
+            def set_current
+              Current.account = Account.find(params[:account_id])
+              Current.user    = Current.account.users.find(params[:user_id])
+            end
         end
-    end
 
-    class Event < ApplicationRecord
-      belongs_to :creator, class_name: 'User'
-      before_validation { self.creator ||= Current.user }
-    end
+        class MessagesController < ApplicationController
+          def create
+            @message = Message.create!(message_params)
+          end
+        end
+
+        class Message < ApplicationRecord
+          has_many :events
+          after_create :track_created
+
+          private
+            def track_created
+              events.create! origin: self, action: :create
+            end
+        end
+
+        class Event < ApplicationRecord
+          belongs_to :creator, class_name: 'User'
+          before_validation { self.creator ||= Current.user }
+        end
 
     *DHH*