diff --git a/pkg/enqueue/Consumption/QueueConsumer.php b/pkg/enqueue/Consumption/QueueConsumer.php
index 49d0d0660..6f39c0159 100644
--- a/pkg/enqueue/Consumption/QueueConsumer.php
+++ b/pkg/enqueue/Consumption/QueueConsumer.php
@@ -15,7 +15,7 @@
 use Interop\Queue\PsrQueue;
 use Psr\Log\NullLogger;
 
-class QueueConsumer
+final class QueueConsumer
 {
     /**
      * @var PsrContext
@@ -268,7 +268,7 @@ public function consume(ExtensionInterface $runtimeExtension = null)
      *
      * @return bool
      */
-    protected function doConsume(ExtensionInterface $extension, Context $context)
+    private function doConsume(ExtensionInterface $extension, Context $context)
     {
         $processor = $context->getPsrProcessor();
         $consumer = $context->getPsrConsumer();
@@ -334,7 +334,7 @@ protected function doConsume(ExtensionInterface $extension, Context $context)
      *
      * @throws \Exception
      */
-    protected function onInterruptionByException(ExtensionInterface $extension, Context $context)
+    private function onInterruptionByException(ExtensionInterface $extension, Context $context)
     {
         $logger = $context->getLogger();
         $logger->error(sprintf('Consuming interrupted by exception'));