diff --git a/app/models/enumeration.rb b/app/models/enumeration.rb
index 2ec96dc..b2337fa 100644
--- a/app/models/enumeration.rb
+++ b/app/models/enumeration.rb
@@ -132,14 +132,9 @@ class Enumeration < ActiveRecord::Base
   # Overrides acts_as_list reset_positions_in_list so that enumeration overrides
   # get the same position as the overriden enumeration
   def reset_positions_in_list
-    super
-    # TODO: no database specific statement
-    if Redmine::Database.mysql?
-      self.class.connection.execute("UPDATE #{self.class.table_name} c JOIN #{self.class.table_name} p on p.id = c.parent_id SET c.position = p.position")
-    else
-      self.class.
-        where("parent_id IS NOT NULL").
-        update_all("position = (SELECT MIN(position) FROM #{self.class.table_name} p WHERE p.id = #{self.class.table_name}.parent_id)")
+    acts_as_list_class.where(scope_condition).reorder("#{position_column} ASC, id ASC").each_with_index do |item, i|
+      acts_as_list_class.where("id = :id OR parent_id = :id", :id => item.id).
+        update_all({position_column => (i + 1)})
     end
   end