diff --git a/Resources/config/services.yml b/Resources/config/services.yml
index ab3d164..709922f 100644
--- a/Resources/config/services.yml
+++ b/Resources/config/services.yml
@@ -4,19 +4,19 @@ parameters:
 
 services:
     phobetor_rabbitmq_supervisor:
-        class: %phobetor_rabbitmq_supervisor.rabbitmq_supervisor_service.class%
+        class: "%phobetor_rabbitmq_supervisor.rabbitmq_supervisor_service.class%"
         arguments:
-            - @phobetor_rabbitmq_supervisor.supervisor_service
-            - @templating
-            - %kernel.root_dir%
-            - %phobetor_rabbitmq_supervisor.paths%
-            - %phobetor_rabbitmq_supervisor.commands%
-            - %phobetor_rabbitmq_supervisor.consumers%
-            - %phobetor_rabbitmq_supervisor.multiple_consumers%
+            - "@phobetor_rabbitmq_supervisor.supervisor_service"
+            - "@templating"
+            - "%kernel.root_dir%"
+            - "%phobetor_rabbitmq_supervisor.paths%"
+            - "%phobetor_rabbitmq_supervisor.commands%"
+            - "%phobetor_rabbitmq_supervisor.consumers%"
+            - "%phobetor_rabbitmq_supervisor.multiple_consumers%"
 
     phobetor_rabbitmq_supervisor.supervisor_service:
-        class: %phobetor_rabbitmq_supervisor.supervisor_service.class%
+        class: "%phobetor_rabbitmq_supervisor.supervisor_service.class%"
         arguments:
-            - %phobetor_rabbitmq_supervisor.workspace%
-            - %phobetor_rabbitmq_supervisor.configuration_file%
-            - %phobetor_rabbitmq_supervisor.supervisor_instance_identifier%
+            - "%phobetor_rabbitmq_supervisor.workspace%"
+            - "%phobetor_rabbitmq_supervisor.configuration_file%"
+            - "%phobetor_rabbitmq_supervisor.supervisor_instance_identifier%"