diff --git a/lib/active_model/serializer.rb b/lib/active_model/serializer.rb
index de54646f..bc96fbfa 100644
--- a/lib/active_model/serializer.rb
+++ b/lib/active_model/serializer.rb
@@ -522,17 +522,4 @@ module ActiveModel
       ActiveSupport::Notifications.instrument("#{name}.serializer", payload, &block)
     end
   end
-end
-
-module ActiveModel::ArraySerializerSupport
-  def active_model_serializer
-    ActiveModel::ArraySerializer
-  end
-end
-
-Array.send(:include, ActiveModel::ArraySerializerSupport)
-
-ActiveSupport.on_load(:active_record) do
-  ActiveRecord::Relation.send(:include, ActiveModel::ArraySerializerSupport)
-end
-
+end
\ No newline at end of file
diff --git a/lib/active_model_serializers.rb b/lib/active_model_serializers.rb
index da4c1780..18679652 100644
--- a/lib/active_model_serializers.rb
+++ b/lib/active_model_serializers.rb
@@ -56,6 +56,18 @@ ActiveSupport.on_load(:active_record) do
   include ActiveModel::SerializerSupport
 end
 
+module ActiveModel::ArraySerializerSupport
+  def active_model_serializer
+    ActiveModel::ArraySerializer
+  end
+end
+
+Array.send(:include, ActiveModel::ArraySerializerSupport)
+
+ActiveSupport.on_load(:active_record) do
+  ActiveRecord::Relation.send(:include, ActiveModel::ArraySerializerSupport)
+end
+
 begin
   require 'action_controller'
   require 'action_controller/serialization'