diff --git a/lib/que/adapters/active_record_with_lock.rb b/lib/que/adapters/active_record_with_lock.rb
index 7dbd41b..21c68ab 100644
--- a/lib/que/adapters/active_record_with_lock.rb
+++ b/lib/que/adapters/active_record_with_lock.rb
@@ -3,18 +3,19 @@
 module Que
   module Adapters
     class ActiveRecordWithLock < Que::Adapters::ActiveRecord
-      class NoLockableJobs < StandardError; end
-      FindJobSecondsTotal = Prometheus::Client::Counter.new(
-        :que_find_job_seconds_total,
-        docstring: "Seconds spent finding a job",
-        labels: %i[queue],
-      )
+      METRICS = [
+        FindJobSecondsTotal = Prometheus::Client::Counter.new(
+          :que_find_job_seconds_total,
+          docstring: "Seconds spent finding a job",
+          labels: %i[queue],
+        ),
 
-      FindJobHitTotal = Prometheus::Client::Counter.new(
-        :que_find_job_total,
-        docstring: "total number of job hit and misses when acquiring a lock",
-        labels: %i[queue job_hit],
-      )
+        FindJobHitTotal = Prometheus::Client::Counter.new(
+          :que_find_job_hit_total,
+          docstring: "total number of job hit and misses when acquiring a lock",
+          labels: %i[queue job_hit],
+        ),
+      ].freeze
 
       def initialize(job_connection_pool:, lock_connection_pool:)
         @job_connection_pool = job_connection_pool
@@ -50,7 +51,7 @@ def execute(command, params = [])
       def lock_job_with_lock_database(queue, cursor)
         loop do
           observe(duration_metric: FindJobSecondsTotal, labels: { queue: queue }) do
-            locked_job = Que.transaction do
+            Que.transaction do
               job_to_lock = Que.execute(:find_job_to_lock, [queue, cursor])
 
               return job_to_lock if job_to_lock.empty?
@@ -61,7 +62,6 @@ def lock_job_with_lock_database(queue, cursor)
               observe(count_metric: FindJobHitTotal, labels: { queue: queue, job_hit: job_locked })
               return job_to_lock if job_locked
             end
-            return locked_job if locked_job
           end
         end
       end
diff --git a/lib/que/middleware/worker_collector.rb b/lib/que/middleware/worker_collector.rb
index 9d498b9..c90fb70 100644
--- a/lib/que/middleware/worker_collector.rb
+++ b/lib/que/middleware/worker_collector.rb
@@ -18,6 +18,7 @@ def initialize(app, options = {})
         register(*WorkerGroup::METRICS)
         register(*Worker::METRICS)
         register(*Locker::METRICS)
+        register(*Adapters::ActiveRecordWithLock::METRICS)
       end
 
       def call(env)
diff --git a/spec/lib/que/adapters/active_record_with_lock_spec.rb b/spec/lib/que/adapters/active_record_with_lock_spec.rb
index 73607e9..f2c96f8 100644
--- a/spec/lib/que/adapters/active_record_with_lock_spec.rb
+++ b/spec/lib/que/adapters/active_record_with_lock_spec.rb
@@ -33,7 +33,9 @@
     end
 
     it "sets correct metric values" do
+      expect(QueJob.count).to eq(10)
       with_workers(5) { wait_for_jobs_to_be_worked }
+      expect(QueJob.count).to eq(0)
       expect(described_class::FindJobHitTotal.values[{ :queue => "default", :job_hit => "true" }]).to eq(10.0)
     end
   end