diff --git a/milli/src/update/index_documents/extract/extract_docid_word_positions.rs b/milli/src/update/index_documents/extract/extract_docid_word_positions.rs
index 0dcd6a42a..303b64271 100644
--- a/milli/src/update/index_documents/extract/extract_docid_word_positions.rs
+++ b/milli/src/update/index_documents/extract/extract_docid_word_positions.rs
@@ -204,7 +204,7 @@ fn tokenizer_builder<'a>(
     tokenizer_builder
 }
 
-/// Extract words maped with their positions of a document,
+/// Extract words mapped with their positions of a document,
 /// ensuring no Language detection mistakes was made.
 #[allow(clippy::too_many_arguments)] // FIXME: consider grouping arguments in a struct
 fn lang_safe_tokens_from_document<'a>(
@@ -273,7 +273,7 @@ fn lang_safe_tokens_from_document<'a>(
     Ok((&buffers.obkv_buffer, script_language_word_count))
 }
 
-/// Extract words maped with their positions of a document.
+/// Extract words mapped with their positions of a document.
 fn tokens_from_document<'a>(
     obkv: &KvReader<FieldId>,
     searchable_fields: &Option<HashSet<FieldId>>,
@@ -294,11 +294,11 @@ fn tokens_from_document<'a>(
                 let value =
                     serde_json::from_slice(field_bytes).map_err(InternalError::SerdeJson)?;
 
-                // prepare writting destination.
+                // prepare writing destination.
                 buffers.obkv_positions_buffer.clear();
                 let mut writer = KvWriterU16::new(&mut buffers.obkv_positions_buffer);
 
-                // convert json into an unique string.
+                // convert json into a unique string.
                 buffers.field_buffer.clear();
                 if let Some(field) = json_to_string(&value, &mut buffers.field_buffer) {
                     // create an iterator of token with their positions.
diff --git a/milli/src/update/index_documents/extract/extract_fid_docid_facet_values.rs b/milli/src/update/index_documents/extract/extract_fid_docid_facet_values.rs
index 2dce90cfc..3fcec3e79 100644
--- a/milli/src/update/index_documents/extract/extract_fid_docid_facet_values.rs
+++ b/milli/src/update/index_documents/extract/extract_fid_docid_facet_values.rs
@@ -75,7 +75,7 @@ pub fn extract_fid_docid_facet_values<R: io::Read + io::Seek>(
     let mut facet_is_null_docids = BTreeMap::<FieldId, (RoaringBitmap, RoaringBitmap)>::new();
     let mut facet_is_empty_docids = BTreeMap::<FieldId, (RoaringBitmap, RoaringBitmap)>::new();
 
-    // We create two buffer for mutable ref issues with closures.
+    // We create two buffers for mutable ref issues with closures.
     let mut numbers_key_buffer = Vec::new();
     let mut strings_key_buffer = Vec::new();
 
@@ -333,7 +333,7 @@ where
                     key_buffer.extend_from_slice(&value_bytes);
                     key_buffer.extend_from_slice(&number.to_be_bytes());
 
-                    // We insert only the Del part of the Obkv to inform
+                    // We insert only the Add part of the Obkv to inform
                     // that we only want to remove all those numbers.
                     let mut obkv = KvWriterDelAdd::memory();
                     obkv.insert(DelAdd::Addition, ().as_bytes())?;
diff --git a/milli/src/update/index_documents/mod.rs b/milli/src/update/index_documents/mod.rs
index 2289666ed..113114681 100644
--- a/milli/src/update/index_documents/mod.rs
+++ b/milli/src/update/index_documents/mod.rs
@@ -449,7 +449,6 @@ where
                 otherwise => otherwise,
             };
 
-            // FIXME: return newly added as well as newly deleted documents
             let (docids, is_merged_database) =
                 write_typed_chunk_into_index(typed_chunk, self.index, self.wtxn, index_is_empty)?;
             if !docids.is_empty() {
diff --git a/milli/src/update/index_documents/typed_chunk.rs b/milli/src/update/index_documents/typed_chunk.rs
index 90f9b7739..dda2ebc1c 100644
--- a/milli/src/update/index_documents/typed_chunk.rs
+++ b/milli/src/update/index_documents/typed_chunk.rs
@@ -409,7 +409,7 @@ pub(crate) fn write_typed_chunk_into_index(
                 dims.into_iter().max_by_key(|(_, count)| *count).map(|(len, _)| len)
             };
 
-            // Ensure that the vector lenghts are correct and
+            // Ensure that the vector lengths are correct and
             // prepare the vectors before inserting them in the HNSW.
             let mut points = Vec::new();
             let mut docids = Vec::new();