diff --git a/js/server/modules/org/arangodb/foxx/manager.js b/js/server/modules/org/arangodb/foxx/manager.js
index 7565f36e04..658abd1c67 100644
--- a/js/server/modules/org/arangodb/foxx/manager.js
+++ b/js/server/modules/org/arangodb/foxx/manager.js
@@ -124,8 +124,8 @@
     ),
     files: (
       joi.object().optional()
-      .pattern(RE_NOT_FQPATH, joi.forbidden())
-      .pattern(RE_FQPATH, joi.string().required())
+      .pattern(RE_EMPTY, joi.forbidden())
+      .pattern(RE_NOT_EMPTY, joi.string().required())
     ),
     isSystem: joi.boolean().default(false),
     keywords: joi.array().optional(),