diff --git a/app/workers/activate_pending_users_worker.rb b/app/workers/activate_pending_users_worker.rb
index 0f0ef3c1..5010ffaa 100644
--- a/app/workers/activate_pending_users_worker.rb
+++ b/app/workers/activate_pending_users_worker.rb
@@ -2,17 +2,14 @@ class ActivatePendingUsersWorker
   include Sidekiq::Worker
   sidekiq_options queue: :critical
 
-
   def perform
     # Spawning possibly many thousands
     # of workers the order doesn't really matter
     # but would like to spread their execution
     # over the next hour to avoid overloading
     # the database.
-    delay = 0
     User.pending.find_each(batch_size: 100) do |user|
-      UserActivateWorker.perform_in(delay.minutes, user.id)
-      delay = delay + Random.rand(0..59)
+      UserActivateWorker.perform_in(Random.rand(0..59).minutes, user.id)
     end
   end
 end
diff --git a/spec/workers/activate_pending_users_worker_spec.rb b/spec/workers/activate_pending_users_worker_spec.rb
new file mode 100644
index 00000000..c009fd5f
--- /dev/null
+++ b/spec/workers/activate_pending_users_worker_spec.rb
@@ -0,0 +1,5 @@
+require 'sidekiq/testing'
+Sidekiq::Testing.inline!
+
+RSpec.describe ActivatePendingUsersWorker do
+end
diff --git a/spec/workers/user_activate_worker_spec.rb b/spec/workers/user_activate_worker_spec.rb
index 525c9a08..6f17dcf3 100644
--- a/spec/workers/user_activate_worker_spec.rb
+++ b/spec/workers/user_activate_worker_spec.rb
@@ -18,7 +18,7 @@
       it 'should activate user' do
         worker.perform(user.id)
         user.reload
-        
+
         expect(user.active?).to eq(true)
         expect(user.activated_on).not_to eq(nil)
       end
@@ -30,7 +30,7 @@
       it 'should do nothing' do
         worker.perform(user.id)
         user.reload
-        
+
         expect(user.updated_at).to eq(user.created_at)
       end
     end