diff --git a/tests/App/Resources/config/config.yaml b/tests/App/Resources/config/config.yaml
index c5c8172df..7abe41257 100644
--- a/tests/App/Resources/config/config.yaml
+++ b/tests/App/Resources/config/config.yaml
@@ -43,7 +43,7 @@ twig:
     exception_controller: null
     paths:
         - '%kernel.project_dir%/Resources/views'
-    strict_variables: '%kernel.debug%'
+    strict_variables: true
 
 doctrine:
     dbal: