diff --git a/milli/src/update/index_documents/helpers/grenad_helpers.rs b/milli/src/update/index_documents/helpers/grenad_helpers.rs
index fb5242910..9d5a67d78 100644
--- a/milli/src/update/index_documents/helpers/grenad_helpers.rs
+++ b/milli/src/update/index_documents/helpers/grenad_helpers.rs
@@ -279,6 +279,6 @@ pub fn sorter_into_lmdb_database(
 }
 
 /// Used when trying to merge readers, but you don't actually care about the values.
-pub fn merge_nothing<'a>(_key: &[u8], _values: &[Cow<'a, [u8]>]) -> Result<Cow<'a, [u8]>> {
+pub fn merge_ignore_values<'a>(_key: &[u8], _values: &[Cow<'a, [u8]>]) -> Result<Cow<'a, [u8]>> {
     Ok(Cow::Owned(Vec::new()))
 }
diff --git a/milli/src/update/index_documents/helpers/mod.rs b/milli/src/update/index_documents/helpers/mod.rs
index 4642bcf14..79d0d0466 100644
--- a/milli/src/update/index_documents/helpers/mod.rs
+++ b/milli/src/update/index_documents/helpers/mod.rs
@@ -8,9 +8,9 @@ use std::convert::{TryFrom, TryInto};
 pub use clonable_mmap::{ClonableMmap, CursorClonableMmap};
 use fst::{IntoStreamer, Streamer};
 pub use grenad_helpers::{
-    as_cloneable_grenad, create_sorter, create_writer, grenad_obkv_into_chunks, merge_nothing,
-    sorter_into_lmdb_database, sorter_into_reader, write_into_lmdb_database, writer_into_reader,
-    GrenadParameters, MergeableReader,
+    as_cloneable_grenad, create_sorter, create_writer, grenad_obkv_into_chunks,
+    merge_ignore_values, sorter_into_lmdb_database, sorter_into_reader, write_into_lmdb_database,
+    writer_into_reader, GrenadParameters, MergeableReader,
 };
 pub use merge_functions::{
     concat_u32s_array, keep_first, keep_first_prefix_value_merge_roaring_bitmaps, keep_latest_obkv,
diff --git a/milli/src/update/index_documents/typed_chunk.rs b/milli/src/update/index_documents/typed_chunk.rs
index be440114f..26b97c3a0 100644
--- a/milli/src/update/index_documents/typed_chunk.rs
+++ b/milli/src/update/index_documents/typed_chunk.rs
@@ -9,8 +9,8 @@ use heed::{BytesDecode, RwTxn};
 use roaring::RoaringBitmap;
 
 use super::helpers::{
-    self, merge_nothing, roaring_bitmap_from_u32s_array, serialize_roaring_bitmap, valid_lmdb_key,
-    CursorClonableMmap,
+    self, merge_ignore_values, roaring_bitmap_from_u32s_array, serialize_roaring_bitmap,
+    valid_lmdb_key, CursorClonableMmap,
 };
 use super::{ClonableMmap, MergeFn};
 use crate::heed_codec::facet::{decode_prefix_string, encode_prefix_string};
@@ -226,7 +226,7 @@ fn merge_word_docids_reader_into_fst(
     word_docids_iter: grenad::Reader<io::Cursor<ClonableMmap>>,
     exact_word_docids_iter: grenad::Reader<io::Cursor<ClonableMmap>>,
 ) -> Result<fst::Set<Vec<u8>>> {
-    let mut merger_builder = MergerBuilder::new(merge_nothing as MergeFn);
+    let mut merger_builder = MergerBuilder::new(merge_ignore_values as MergeFn);
     merger_builder.push(word_docids_iter.into_cursor()?);
     merger_builder.push(exact_word_docids_iter.into_cursor()?);
     let mut iter = merger_builder.build().into_stream_merger_iter()?;