diff --git a/site/plugins/form/composer.json b/site/plugins/form/composer.json
index 1ea3f327..f56d327f 100644
--- a/site/plugins/form/composer.json
+++ b/site/plugins/form/composer.json
@@ -27,7 +27,8 @@
     },
     "autoload": {
         "classmap": [
-            "app"
+            "app",
+            "twig"
         ]
     }
 }