diff --git a/db/migrate/20120302172252_add_nested_interval_to_domains.rb b/db/migrate/20120302172252_add_nested_interval_to_domains.rb
index 3d11bc9..1649020 100644
--- a/db/migrate/20120302172252_add_nested_interval_to_domains.rb
+++ b/db/migrate/20120302172252_add_nested_interval_to_domains.rb
@@ -3,8 +3,8 @@ class AddNestedIntervalToDomains < ActiveRecord::Migration
     add_column :domains, :parent_id, :integer
     add_column :domains, :lftp, :integer, null: false, default: 0
     add_column :domains, :lftq, :integer, null: false, default: 0
-    add_column :domains, :rgtp, :integer, null: false
-    add_column :domains, :rgtq, :integer, null: false
+    add_column :domains, :rgtp, :integer, null: false, default: 0
+    add_column :domains, :rgtq, :integer, null: false, default: 0
     add_column :domains, :lft, :float, null: false, limit: 53
     add_column :domains, :rgt, :float, null: false, limit: 53
 
diff --git a/db/schema.rb b/db/schema.rb
index 71bf421..caa0bf3 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -67,8 +67,8 @@ ActiveRecord::Schema.define(version: 20140526093613) do
     t.integer  "parent_id"
     t.integer  "lftp",                        default: 0, null: false
     t.integer  "lftq",                        default: 0, null: false
-    t.integer  "rgtp",                                    null: false
-    t.integer  "rgtq",                                    null: false
+    t.integer  "rgtp",                        default: 0, null: false
+    t.integer  "rgtq",                        default: 0, null: false
     t.float    "lft",                                     null: false
     t.float    "rgt",                                     null: false
   end