diff --git a/Ressources/config/services.yaml b/Ressources/config/services.yaml
index f1ead01..228c5df 100644
--- a/Ressources/config/services.yaml
+++ b/Ressources/config/services.yaml
@@ -5,4 +5,4 @@ services:
   Bluesquare\Validator:
     class: Bluesquare\Validator
     autowire: true
-    arguments: ['@request_stack'']
+    arguments: ['@request_stack']