diff --git a/meilisearch/src/routes/indexes/documents.rs b/meilisearch/src/routes/indexes/documents.rs
index 98a526eb8..5571b02eb 100644
--- a/meilisearch/src/routes/indexes/documents.rs
+++ b/meilisearch/src/routes/indexes/documents.rs
@@ -578,7 +578,7 @@ pub async fn delete_documents_by_filter(
 #[derive(Debug, Deserr)]
 #[deserr(error = DeserrJsonError, rename_all = camelCase, deny_unknown_fields)]
 pub struct DocumentEditionByFunction {
-    #[deserr(error = DeserrJsonError<InvalidDocumentFilter>, missing_field_error = DeserrJsonError::missing_document_filter)]
+    #[deserr(default, error = DeserrJsonError<InvalidDocumentFilter>)]
     filter: Option<Value>,
     #[deserr(error = DeserrJsonError<InvalidDocumentFilter>, missing_field_error = DeserrJsonError::missing_document_filter)]
     function: String,