diff --git a/app/controllers/apps_controller.rb b/app/controllers/apps_controller.rb
index a812306..8da3b21 100644
--- a/app/controllers/apps_controller.rb
+++ b/app/controllers/apps_controller.rb
@@ -97,7 +97,7 @@ protected
     # set the app's notification service
     available_notification_classes = [NotificationService] + NotificationService.subclasses
     notification_class = available_notification_classes.detect { |c| c.name == notification_type }
-    if !notification_class.nil?
+    unless notification_class.nil?
       app.notification_service = notification_class.new(params[:app][:notification_service_attributes])
     end
   end
diff --git a/app/models/problem.rb b/app/models/problem.rb
index 928fc41..ca64d43 100644
--- a/app/models/problem.rb
+++ b/app/models/problem.rb
@@ -161,8 +161,8 @@ class Problem
       app,
       self,
       protocol: Errbit::Config.protocol,
-      host: Errbit::Config.host,
-      port: Errbit::Config.port
+      host:     Errbit::Config.host,
+      port:     Errbit::Config.port
     )
   end
 
diff --git a/config/puma.default.rb b/config/puma.default.rb
index 5222a74..e38b1cb 100644
--- a/config/puma.default.rb
+++ b/config/puma.default.rb
@@ -6,8 +6,8 @@ threads threads_count, threads_count
 
 preload_app!
 
-rackup      DefaultRackup
-port        ENV['PORT']     || 8080
+rackup DefaultRackup
+port ENV['PORT'] || 8080
 environment ENV['RACK_ENV'] || 'development'
 
 on_worker_boot do
diff --git a/lib/airbrake_api/v3/notice_parser.rb b/lib/airbrake_api/v3/notice_parser.rb
index fcae8fd..1a9018f 100644
--- a/lib/airbrake_api/v3/notice_parser.rb
+++ b/lib/airbrake_api/v3/notice_parser.rb
@@ -72,9 +72,9 @@ module AirbrakeApi
         return context['user'] if context['user']
 
         {
-          'id' => context['userId'],
-          'name' => context['userName'],
-          'email' => context['userEmail'],
+          'id'       => context['userId'],
+          'name'     => context['userName'],
+          'email'    => context['userEmail'],
           'username' => context['userUsername']
         }.compact
       end
--
libgit2 0.21.2