diff --git a/spec/support/schema.rb b/spec/support/schema.rb
index 97e828c..9aca350 100644
--- a/spec/support/schema.rb
+++ b/spec/support/schema.rb
@@ -135,7 +135,7 @@ module Schema
         t.string   :only_admin
         t.integer  :salary
         t.boolean  :awesome, default: false
-        t.timestamps
+        t.timestamps null: false
       end
 
       create_table :articles, :force => true do |t|