diff --git a/app/models/observer/ticket/notification/background_job.rb b/app/models/observer/ticket/notification/background_job.rb
index 84d459235..82ea495b4 100644
--- a/app/models/observer/ticket/notification/background_job.rb
+++ b/app/models/observer/ticket/notification/background_job.rb
@@ -186,7 +186,7 @@ class Observer::Ticket::Notification::BackgroundJob
   def add_recipient_list(ticket, user, channels)
     return if channels.empty?
     identifier = user.email
-    if !identifier && identifier == ''
+    if !identifier || identifier == ''
       identifier = user.login
     end
     recipient_list = "#{identifier}(#{channels.join(',')})"