diff --git a/app/controllers/comments_controller.rb b/app/controllers/comments_controller.rb
index fe7f454c..f6e4f7fb 100644
--- a/app/controllers/comments_controller.rb
+++ b/app/controllers/comments_controller.rb
@@ -49,7 +49,7 @@ class CommentsController < ApplicationController
     @comment = Comment.new(comment_params_without_request_id)
 
     if comment_params[:request_id]
-      UserMailer.got_new_comment(@comment, RequestForComment.find(comment_params[:request_id]), current_user)
+      UserMailer.got_new_comment(@comment, RequestForComment.find(comment_params[:request_id]), current_user).deliver_now
     end
 
     respond_to do |format|
diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index e1773d48..5b1a04fe 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -18,6 +18,6 @@ class UserMailer < ActionMailer::Base
     @commenting_user_displayname = commenting_user.displayname
     @comment_text = comment.text
     @rfc_link = request_for_comment_url(request_for_comment)
-    mail(subject: t('mailers.user_mailer.got_new_comment.subject', commenting_user_displayname: @commenting_user_displayname), to: request_for_comment.user.email).deliver
+    mail(subject: t('mailers.user_mailer.got_new_comment.subject', commenting_user_displayname: @commenting_user_displayname), to: request_for_comment.user.email)
   end
 end