diff --git a/vendor/plugins/engines/tasks/engines.rake b/vendor/plugins/engines/tasks/engines.rake
index 48e317066..231cd025a 100644
--- a/vendor/plugins/engines/tasks/engines.rake
+++ b/vendor/plugins/engines/tasks/engines.rake
@@ -37,6 +37,7 @@ namespace :db do
     desc 'Migrate plugins to current status.'
     task :plugins => :environment do
       Engines.plugins.each do |plugin|
+        next unless plugin.respond_to?(:migration_directory)
         next unless File.exists? plugin.migration_directory
         puts "Migrating plugin #{plugin.name} ..."
         plugin.migrate