2 files changed, 2 insertions, 2 deletions
diff --git a/activejob/lib/active_job/queue_adapters/backburner_adapter.rb b/activejob/lib/active_job/queue_adapters/backburner_adapter.rb
index 8d34155645..8ebee36e45 100644
--- a/activejob/lib/active_job/queue_adapters/backburner_adapter.rb
+++ b/activejob/lib/active_job/queue_adapters/backburner_adapter.rb
@@ -9,7 +9,7 @@ module ActiveJob
         end
 
         def enqueue_at(job, timestamp, *args)
-          delay = Time.current.to_f - timestamp
+          delay = timestamp - Time.current.to_f
           Backburner::Worker.enqueue JobWrapper, [ job.name, *args ], queue: job.queue_name, delay: delay
         end
       end
diff --git a/activejob/lib/active_job/queue_adapters/que_adapter.rb b/activejob/lib/active_job/queue_adapters/que_adapter.rb
index 0b87deb4e0..9c84c74f83 100644
--- a/activejob/lib/active_job/queue_adapters/que_adapter.rb
+++ b/activejob/lib/active_job/queue_adapters/que_adapter.rb
@@ -9,7 +9,7 @@ module ActiveJob
         end
 
         def enqueue_at(job, timestamp, *args)
-          raise NotImplementedError
+          JobWrapper.enqueue job.name, *args, queue: job.queue_name, run_at: Time.at(timestamp)
         end
       end