diff --git a/src/pages/api/send.ts b/src/pages/api/send.ts
index b078a904..72fd7a64 100644
--- a/src/pages/api/send.ts
+++ b/src/pages/api/send.ts
@@ -73,7 +73,7 @@ const schema = {
         url: yup.string(),
         website: yup.string().uuid().required(),
         name: yup.string().max(50),
-        tag: yup.string().max(50),
+        tag: yup.string().max(50).nullable(),
       })
       .required(),
     type: yup