diff --git a/lib/fast_jsonapi/object_serializer.rb b/lib/fast_jsonapi/object_serializer.rb
index 2cc1b35..7f740c8 100644
--- a/lib/fast_jsonapi/object_serializer.rb
+++ b/lib/fast_jsonapi/object_serializer.rb
@@ -41,7 +41,7 @@ module FastJsonapi
 
       return serializable_hash unless @resource
 
-      serializable_hash[:data] = self.class.record_hash(@resource, @fieldsets[self.class.reflected_record_type.to_sym], @params)
+      serializable_hash[:data] = self.class.record_hash(@resource, @fieldsets[self.class.record_type.to_sym], @params)
       serializable_hash[:included] = self.class.get_included_records(@resource, @includes, @known_included_objects, @fieldsets, @params) if @includes.present?
       serializable_hash
     end
@@ -51,7 +51,7 @@ module FastJsonapi
 
       data = []
       included = []
-      fieldset = @fieldsets[self.class.reflected_record_type.to_sym]
+      fieldset = @fieldsets[self.class.record_type.to_sym]
       @resource.each do |record|
         data << self.class.record_hash(record, fieldset, @params)
         included.concat self.class.get_included_records(record, @includes, @known_included_objects, @fieldsets, @params) if @includes.present?
diff --git a/lib/fast_jsonapi/serialization_core.rb b/lib/fast_jsonapi/serialization_core.rb
index 8b3ea11..6ec069a 100644
--- a/lib/fast_jsonapi/serialization_core.rb
+++ b/lib/fast_jsonapi/serialization_core.rb
@@ -132,7 +132,7 @@ module FastJsonapi
 
               known_included_objects[code] = inc_obj
 
-              included_records << serializer.record_hash(inc_obj, fieldsets[serializer.reflected_record_type], params)
+              included_records << serializer.record_hash(inc_obj, fieldsets[serializer.record_type], params)
             end
           end
         end