diff --git a/lib/noosfero/plugin/active_record.rb b/lib/noosfero/plugin/active_record.rb
index f7769ed..563371b 100644
--- a/lib/noosfero/plugin/active_record.rb
+++ b/lib/noosfero/plugin/active_record.rb
@@ -1,5 +1,7 @@
 class Noosfero::Plugin::ActiveRecord < ActiveRecord::Base
-  def self.table_name
-    self.name.gsub('::','_').underscore.pluralize
+
+  def self.inherited(child)
+    self.table_name = child.name.gsub('::','_').underscore.pluralize
   end
+
 end
--
libgit2 0.21.2