diff --git a/app/api/helpers.rb b/app/api/helpers.rb
index 97dc03e..127ed7a 100644
--- a/app/api/helpers.rb
+++ b/app/api/helpers.rb
@@ -232,7 +232,7 @@ module Api
           order = 'RANDOM()'
         else
           field_name, direction = params[:order].split(' ')
-          assoc_class = extract_associated_classname(object, smethod_or_relation)
+          assoc_class = extract_associated_classname(object, method_or_relation)
           if !field_name.blank? and assoc_class
             if assoc_class.attribute_names.include? field_name
               if direction.present? and ['ASC','DESC'].include? direction.upcase
--
libgit2 0.21.2