diff --git a/src/Services/QueueService.php b/src/Services/QueueService.php
index d23e9d3..da04a93 100644
--- a/src/Services/QueueService.php
+++ b/src/Services/QueueService.php
@@ -3,16 +3,20 @@
 namespace Benzine\Services;
 
 use Gone\UUID\UUID;
+use Monolog\Logger;
 
 class QueueService
 {
     public const MAX_QUEUE_AGE = 60 * 60 * 24;
     protected \Redis $redis;
+    protected Logger $logger;
 
     public function __construct(
-        \Redis $redis
+        \Redis $redis,
+        Logger $logger
     ) {
         $this->redis = $redis;
+        $this->logger = $logger;
     }
 
     /**
@@ -30,7 +34,7 @@ class QueueService
             // Set the data element itself
             $this->redis->set("queue:data:{$queueName}:{$itemId}", $serialised);
             // Push the element into the index list
-            $this->redis->rpush("queue:index:{$queueName}", [$itemId]);
+            $this->redis->rpush("queue:index:{$queueName}", $itemId);
             // Increment the length count
             $this->redis->incr("queue:length:{$queueName}");
             // Set the queue identifier to the current time, if it doesn't already exist
diff --git a/src/Workers/AbstractQueueWorker.php b/src/Workers/AbstractQueueWorker.php
index 63c8df2..6bfe996 100644
--- a/src/Workers/AbstractQueueWorker.php
+++ b/src/Workers/AbstractQueueWorker.php
@@ -107,7 +107,6 @@ abstract class AbstractQueueWorker extends AbstractWorker
     public function iterate(): bool
     {
         $queueLength = $this->queueService->getQueueLength($this->inputQueue);
-
         $this->logger->debug(sprintf(
             'Queue %s Length: %d',
             $this->inputQueue,
@@ -173,5 +172,5 @@ abstract class AbstractQueueWorker extends AbstractWorker
         return sprintf('%s:failures', $this->inputQueue);
     }
 
-    abstract public function process(WorkerWorkItem $item): ?WorkerWorkItem;
+    abstract protected function process(WorkerWorkItem $item): ?WorkerWorkItem;
 }
diff --git a/src/Workers/ExampleQueueWorker.php b/src/Workers/ExampleQueueWorker.php
index 2b7d6ab..fe32e8a 100644
--- a/src/Workers/ExampleQueueWorker.php
+++ b/src/Workers/ExampleQueueWorker.php
@@ -2,9 +2,9 @@
 
 namespace Benzine\Workers;
 
-class ExampleQueueWorker extends AbstractQueueWorker implements QueueWorkerInterface
+class ExampleQueueWorker extends AbstractQueueWorker
 {
-    public function process(WorkerWorkItem $item): ?WorkerWorkItem
+    protected function process(WorkerWorkItem $item): ?WorkerWorkItem
     {
         return $item->setOutput(sqrt($item->getInput()));
     }
diff --git a/src/Workers/QueueWorkerInterface.php b/src/Workers/QueueWorkerInterface.php
deleted file mode 100644
index 059434e..0000000
--- a/src/Workers/QueueWorkerInterface.php
+++ /dev/null
@@ -1,13 +0,0 @@
-<?php
-
-namespace Benzine\Workers;
-
-interface QueueWorkerInterface extends WorkerInterface
-{
-    /**
-     * @param $item WorkerWorkItem
-     *
-     * @return null|WorkerWorkItem mutated result work item, or null
-     */
-    public function process(WorkerWorkItem $item): ?WorkerWorkItem;
-}