diff --git a/app/controllers/usuaries_controller.rb b/app/controllers/usuaries_controller.rb
index 716668a9..d75f3c20 100644
--- a/app/controllers/usuaries_controller.rb
+++ b/app/controllers/usuaries_controller.rb
@@ -164,7 +164,7 @@ class UsuariesController < ApplicationController
   end
 
   def invite_as
-    Rol.role?(params[:invite_as].singularize) ? params[:invite_as] : Rol::INVITADE.pluralize
+    Rol.role?(params[:invite_as]&.singularize) ? params[:invite_as] : Rol::INVITADE.pluralize
   end
 
   def site