diff --git a/imgix.services.yml b/imgix.services.yml
index 0f186db..b220790 100644
--- a/imgix.services.yml
+++ b/imgix.services.yml
@@ -2,10 +2,10 @@ services:
   imgix.styles:
     class: Drupal\imgix\Service\ImgixStyles
     arguments:
-      - @entity_type.manager
-      - @config.factory
-      - @image.factory
-      - @logger.channel.imgix
+      - '@entity_type.manager'
+      - '@config.factory'
+      - '@image.factory'
+      - '@logger.channel.imgix'
   logger.channel.imgix:
     parent: logger.channel_base
     arguments: ['imgix']