diff --git a/lib/tasks/plugins.rake b/lib/tasks/plugins.rake
index 6b9c7e2..81cd6ac 100644
--- a/lib/tasks/plugins.rake
+++ b/lib/tasks/plugins.rake
@@ -7,7 +7,11 @@ namespace :noosfero do
     plugin_migration_dirs = Dir.glob(Rails.root.join('{baseplugins,config/plugins}', '*', 'db', 'migrate'))
 
     task :load_config do
-      dirs = Dir.glob("{baseplugins,config/plugins}/*/db/migrate")
+      dirs = Dir.glob("{baseplugins,config/plugins}/*").uniq do |dir|
+        File.basename(dir)
+      end.map do |dir|
+        File.join(dir, 'db/migrate')
+      end
       dirs.each do |dir|
         ActiveRecord::Migrator.migrations_paths << dir
       end
--
libgit2 0.21.2