diff --git a/app/controllers/repp/v1/certificates/p12_controller.rb b/app/controllers/repp/v1/certificates/p12_controller.rb
index 3b3e9f182..13f5283fd 100644
--- a/app/controllers/repp/v1/certificates/p12_controller.rb
+++ b/app/controllers/repp/v1/certificates/p12_controller.rb
@@ -13,7 +13,7 @@ module Repp
           api_user_id = p12_params[:api_user_id]
           render_error(I18n.t('errors.messages.not_found'), :not_found) and return if api_user_id.blank?
 
-          certificate = ::Certificates::CertificateGenerator.new(api_user_id: api_user_id).execute
+          certificate = ::Certificates::CertificateGenerator.new(api_user_id: api_user_id, interface: 'registrar').execute
           render_success(data: { certificate: certificate })
         end
 
diff --git a/app/models/certificate.rb b/app/models/certificate.rb
index ec30f6aec..a885f462a 100644
--- a/app/models/certificate.rb
+++ b/app/models/certificate.rb
@@ -131,7 +131,7 @@ class Certificate < ApplicationRecord
     cn = pc.scan(%r{\/CN=(.+)}).flatten.first
     self.common_name = cn.split('/').first
     self.md5 = OpenSSL::Digest::MD5.new(origin.to_der).to_s if crt
-    self.interface = crt ? API : REGISTRAR
+    self.interface = crt ? API : REGISTRAR if interface.blank?
   end
 
   def create_tempfile(filename, content = '')