diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 9eb7dec..b1cf35f 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -335,12 +335,6 @@ Style/MultilineBlockLayout:
 Style/MultilineOperationIndentation:
   Enabled: false
 
-# Offense count: 1
-# Cop supports --auto-correct.
-Style/NegatedIf:
-  Exclude:
-    - 'app/controllers/apps_controller.rb'
-
 # Offense count: 2
 # Cop supports --auto-correct.
 Style/ParallelAssignment:
diff --git a/app/controllers/apps_controller.rb b/app/controllers/apps_controller.rb
index ce19b77..65da197 100644
--- a/app/controllers/apps_controller.rb
+++ b/app/controllers/apps_controller.rb
@@ -97,7 +97,7 @@ class AppsController < ApplicationController
       if params[:app][:notification_service_attributes] && (notification_type = params[:app][:notification_service_attributes][:type])
         available_notification_classes = [NotificationService] + NotificationService.subclasses
         notification_class = available_notification_classes.detect{|c| c.name == notification_type}
-        if !notification_class.nil?
+        if notification_class.present?
           app.notification_service = notification_class.new(params[:app][:notification_service_attributes])
         end
       end
--
libgit2 0.21.2