diff --git a/lib/generators/serializer/serializer_generator.rb b/lib/generators/serializer/serializer_generator.rb
index 4d631575..dcc5ccf3 100644
--- a/lib/generators/serializer/serializer_generator.rb
+++ b/lib/generators/serializer/serializer_generator.rb
@@ -27,13 +27,8 @@ module Rails
       def parent_class_name
         if options[:parent]
           options[:parent]
-        # Only works on 3.2
-        # elsif (n = Rails::Generators.namespace) && n.const_defined?(:ApplicationSerializer)
-        #   "ApplicationSerializer"
-        elsif defined?(::ApplicationSerializer)
-          "ApplicationSerializer"
         else
-          "ActiveModel::Serializer"
+          "ApplicationSerializer"
         end
       end
     end