diff --git a/src/models/FormPublish.ts b/src/models/FormPublish.ts
index e029c32f0..110cc3a3f 100644
--- a/src/models/FormPublish.ts
+++ b/src/models/FormPublish.ts
@@ -25,7 +25,7 @@ export const validationSchema = Yup.object().shape<MetadataPublishForm>({
   // ---- optional fields ----
   copyrightHolder: Yup.string(),
   tags: Yup.string(),
-  links: Yup.object<FileMetadata[]>()
+  links: Yup.object<FileMetadata[]>().nullable()
 })
 
 export const initialValues: MetadataPublishForm = {