diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index 30e2d1a82c588e98696f2ed08d84a09005444a2a..dd5b9a00ffe30a508cf6dadf2fb5845c9c256391 100644
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -577,15 +577,25 @@ def serialize(attr_name, class_name = Object)
       #
       # ==== Examples
       #
-      #   class Invoice < ActiveRecord::Base; end;
+      #   class Invoice < ActiveRecord::Base
+      #   end
+      #
       #   file                  class               table_name
       #   invoice.rb            Invoice             invoices
       #
-      #   class Invoice < ActiveRecord::Base; class Lineitem < ActiveRecord::Base; end; end;
+      #   class Invoice < ActiveRecord::Base
+      #     class Lineitem < ActiveRecord::Base
+      #     end
+      #   end
+      #
       #   file                  class               table_name
       #   invoice.rb            Invoice::Lineitem   invoice_lineitems
       #
-      #   module Invoice; class Lineitem < ActiveRecord::Base; end; end;
+      #   module Invoice
+      #     class Lineitem < ActiveRecord::Base
+      #     end
+      #   end
+      #
       #   file                  class               table_name
       #   invoice/lineitem.rb   Invoice::Lineitem   lineitems
       #