diff --git a/lib/tasks/plugins.rake b/lib/tasks/plugins.rake
index 825c701..94bb6c2 100644
--- a/lib/tasks/plugins.rake
+++ b/lib/tasks/plugins.rake
@@ -8,16 +8,16 @@ namespace :noosfero do
     end
     task :abort_if_pending_migrations do
       if defined? ActiveRecord
-        plugin_migration_dirs.each do |path|
-          pending_migrations = ActiveRecord::Migrator.new(:up, path).pending_migrations
+        pending_migrations = plugin_migration_dirs.map do |path|
+          ActiveRecord::Migrator.new(:up, path).pending_migrations
+        end.flatten
 
-          if pending_migrations.any?
-            puts "You have #{pending_migrations.size} pending migrations:"
-            pending_migrations.each do |pending_migration|
-              puts '  %4d %s' % [pending_migration.version, pending_migration.name]
-            end
-            abort %{Run "rake db:migrate" to update your database then try again.}
+        if pending_migrations.any?
+          puts "You have #{pending_migrations.size} pending migrations:"
+          pending_migrations.each do |pending_migration|
+            puts '  %4d %s' % [pending_migration.version, pending_migration.name]
           end
+          abort %{Run "rake db:migrate" to update your database then try again.}
         end
       end
     end
--
libgit2 0.21.2