diff --git a/app/controllers/api/v1/registrant/contacts_controller.rb b/app/controllers/api/v1/registrant/contacts_controller.rb
index 4a2be2159..cef8176e1 100644
--- a/app/controllers/api/v1/registrant/contacts_controller.rb
+++ b/app/controllers/api/v1/registrant/contacts_controller.rb
@@ -3,7 +3,7 @@ require 'serializers/registrant_api/contact'
 module Api
   module V1
     module Registrant
-      class ContactsController < BaseController
+      class ContactsController < ::Api::V1::Registrant::BaseController
         before_action :set_contacts_pool
 
         def index
diff --git a/app/controllers/api/v1/registrant/domains_controller.rb b/app/controllers/api/v1/registrant/domains_controller.rb
index 4e5c8bb28..130234b90 100644
--- a/app/controllers/api/v1/registrant/domains_controller.rb
+++ b/app/controllers/api/v1/registrant/domains_controller.rb
@@ -3,7 +3,7 @@ require 'serializers/registrant_api/domain'
 module Api
   module V1
     module Registrant
-      class DomainsController < BaseController
+      class DomainsController < ::Api::V1::Registrant::BaseController
         def index
           limit = params[:limit] || 200
           offset = params[:offset] || 0
diff --git a/app/controllers/api/v1/registrant/registry_locks_controller.rb b/app/controllers/api/v1/registrant/registry_locks_controller.rb
index d431b5cd0..a8f420ae5 100644
--- a/app/controllers/api/v1/registrant/registry_locks_controller.rb
+++ b/app/controllers/api/v1/registrant/registry_locks_controller.rb
@@ -3,7 +3,7 @@ require 'serializers/registrant_api/domain'
 module Api
   module V1
     module Registrant
-      class RegistryLocksController < BaseController
+      class RegistryLocksController < ::Api::V1::Registrant::BaseController
         before_action :set_domain
         before_action :authorized_to_manage_locks?