diff --git a/spec/factories/repositories.rb b/spec/factories/repositories.rb
index 0f7132f..0088649 100644
--- a/spec/factories/repositories.rb
+++ b/spec/factories/repositories.rb
@@ -23,7 +23,6 @@ FactoryGirl.define do
     scm_type "GIT"
     address "https://github.com/rafamanzo/runge-kutta-vtk.git"
     kalibro_configuration_id 1
-    project_id 1
     send_email "test@test.com"
   end
 
@@ -36,11 +35,14 @@ FactoryGirl.define do
     scm_type "GIT"
     address "https://github.com/mezuro/kalibro_processor.git"
     kalibro_configuration_id 1
-    project_id 1
     send_email "test@test.com"
   end
 
   factory :another_repository, parent: :repository do
     id 2
   end
+
+  trait :with_project_id do
+    project_id 1
+  end
 end
--
libgit2 0.21.2