diff --git a/core/modules/hal/hal.services.yml b/core/modules/hal/hal.services.yml
index a655447..f856128 100644
--- a/core/modules/hal/hal.services.yml
+++ b/core/modules/hal/hal.services.yml
@@ -12,7 +12,7 @@ services:
     class: Drupal\hal\Normalizer\TextItemBaseNormalizer
     arguments: ['@renderer']
     tags:
-      // The priority needs to higher than serializer.normalizer.field_item.hal.
+      # The priority needs to higher than serializer.normalizer.field_item.hal.
       - { name: normalizer, priority: 20 }
   serializer.normalizer.field.hal:
     class: Drupal\hal\Normalizer\FieldNormalizer