diff --git a/app/helpers/external/mailbluster_helper.rb b/app/helpers/external/mailbluster_helper.rb
index 8a8d770c..5c39bf2f 100644
--- a/app/helpers/external/mailbluster_helper.rb
+++ b/app/helpers/external/mailbluster_helper.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require 'httparty'
 
 module External
@@ -12,10 +13,10 @@ module External
     def create_lead(user)
       options = {
         headers: {
-          'Content-Type' => 'application/json',
+          'Content-Type'  => 'application/json',
           'Authorization' => ENV['MAILBLUSTER_API_KEY']
         },
-        body: {
+        body:    {
           'email'            => user.email,
           'firstName'        => user.name,
           'overrideExisting' => true,
@@ -32,10 +33,10 @@ module External
     def edit_lead(user, add_tags: [], remove_tags: [], old_email: nil)
       options = {
         headers: {
-          'Content-Type' => 'application/json',
+          'Content-Type'  => 'application/json',
           'Authorization' => ENV['MAILBLUSTER_API_KEY']
         },
-        body: {
+        body:    {
           'email'            => user.email,
           'firstName'        => user.name,
           'overrideExisting' => true,
@@ -52,7 +53,7 @@ module External
       email_hash = Digest::MD5.hexdigest user.email
       options = {
         headers: {
-          'Content-Type' => 'application/json',
+          'Content-Type'  => 'application/json',
           'Authorization' => ENV['MAILBLUSTER_API_KEY']
         }
       }
diff --git a/app/models/user.rb b/app/models/user.rb
index 9ff90c16..f36a25d1 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -363,7 +363,7 @@ class User < ApplicationRecord
     User.count == 1 && User.first.email == 'deleted@localhost.osem'
   end
 
-  # TODO email_hash function for mailbluster
+  # TODO: email_hash function for mailbluster
   # def email_hash
   #   Digest::MD5.hexdigest user.email
   # end
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index 5df95d61..cd3bac07 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -49,7 +49,7 @@
 require 'spec_helper'
 
 describe User do
-  
+
   let(:user_admin) { create(:admin) }
   let(:conference) { create(:conference, short_title: 'oSC16', title: 'openSUSE Conference 2016') }
   let(:conference2) { create(:conference, short_title: 'oSC15', title: 'openSUSE Conference 2015') }