diff --git a/config/environments/development.rb b/config/environments/development.rb
index 6f20d142..86ae3d0b 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -35,6 +35,3 @@
   # with SQLite, MySQL, and PostgreSQL)
   # config.active_record.auto_explain_threshold_in_seconds = 0.5 # removed in rails 4
 end
-
-ActionMailer::Base.register_interceptor(DevelopmentMailInterceptor) if Rails.env.development?
-
diff --git a/config/initializers/mail_interceptor.rb b/config/initializers/mail_interceptor.rb
new file mode 100644
index 00000000..bb837c07
--- /dev/null
+++ b/config/initializers/mail_interceptor.rb
@@ -0,0 +1,4 @@
+if Rails.env.development?
+  require 'development_mail_interceptor'
+  Mail.register_interceptor(DevelopmentMailInterceptor)
+end