diff --git a/milli/src/update/index_documents/typed_chunk.rs b/milli/src/update/index_documents/typed_chunk.rs
index 915bb2299..3f197fbd1 100644
--- a/milli/src/update/index_documents/typed_chunk.rs
+++ b/milli/src/update/index_documents/typed_chunk.rs
@@ -249,7 +249,7 @@ pub(crate) fn write_typed_chunk_into_index(
                 // convert the vector back to a Vec<f32>
                 let vector: Vec<f32> = pod_collect_to_vec(value);
 
-                // TODO Move this error in the vector extractor
+                // TODO Inform the user about the document that has a wrong `_vectors`
                 let found = vector.len();
                 let expected = *expected_dimensions.get_or_insert(found);
                 if expected != found {