diff --git a/db/migrate/20120101000001_create_base.rb b/db/migrate/20120101000001_create_base.rb
index d8f921390..88a0749fb 100644
--- a/db/migrate/20120101000001_create_base.rb
+++ b/db/migrate/20120101000001_create_base.rb
@@ -459,7 +459,7 @@ class CreateBase < ActiveRecord::Migration
     create_table :external_credentials do |t|
       t.string :name
       t.string :credentials, limit: 2500, null: false
-      t.timestamps
+      t.timestamps                        null: false
     end
 
     create_table :object_manager_attributes do |t|