diff --git a/config/initializers/_load_config.rb b/config/initializers/_load_config.rb
index 50bee9e..9ab6bca 100644
--- a/config/initializers/_load_config.rb
+++ b/config/initializers/_load_config.rb
@@ -43,6 +43,7 @@ end
 
 # Set SMTP settings if given.
 if smtp = Errbit::Config.smtp_settings
+  Errbit::Application.config.action_mailer.smtp_settings = smtp
   ActionMailer::Base.delivery_method = :smtp
   ActionMailer::Base.smtp_settings = smtp
 end
--
libgit2 0.21.2