diff --git a/sunspot_rails/lib/sunspot/rails/tasks.rb b/sunspot_rails/lib/sunspot/rails/tasks.rb
index 28078769b..b000a39d4 100644
--- a/sunspot_rails/lib/sunspot/rails/tasks.rb
+++ b/sunspot_rails/lib/sunspot/rails/tasks.rb
@@ -48,7 +48,7 @@
     end
     unless args[:models]
       models_path = Rails.root.join('app', 'models')
-      all_files = Dir.glob(models_root.join('**', '*.rb'))
+      all_files = Dir.glob(models_path.join('**', '*.rb'))
       all_models = all_files.map { |path| path.sub(models_path.to_s, '')[0..-4].camelize.constantize rescue nil }.compact
       sunspot_models = all_models.select { |m| m < ActiveRecord::Base and m.searchable? }
     else