diff --git a/meilisearch/src/search.rs b/meilisearch/src/search.rs
index adf9a01e6..5cb8725a6 100644
--- a/meilisearch/src/search.rs
+++ b/meilisearch/src/search.rs
@@ -315,7 +315,7 @@ fn prepare_search<'t>(
     query: &'t SearchQuery,
     features: RoFeatures,
 ) -> Result<(milli::Search<'t>, bool, usize, usize), MeilisearchHttpError> {
-    let mut search = index.search(&rtxn);
+    let mut search = index.search(rtxn);
 
     if query.vector.is_some() && query.q.is_some() {
         warn!("Ignoring the query string `q` when used with the `vector` parameter.");
@@ -337,7 +337,7 @@ fn prepare_search<'t>(
     search.terms_matching_strategy(query.matching_strategy.into());
 
     let max_total_hits = index
-        .pagination_max_total_hits(&rtxn)
+        .pagination_max_total_hits(rtxn)
         .map_err(milli::Error::from)?
         .unwrap_or(DEFAULT_PAGINATION_MAX_TOTAL_HITS);
 
diff --git a/milli/src/heed_codec/fst_set_codec.rs b/milli/src/heed_codec/fst_set_codec.rs
index 551f04678..fc79acf29 100644
--- a/milli/src/heed_codec/fst_set_codec.rs
+++ b/milli/src/heed_codec/fst_set_codec.rs
@@ -18,6 +18,6 @@ impl<'a> BytesDecode<'a> for FstSetCodec {
     type DItem = Set<&'a [u8]>;
 
     fn bytes_decode(bytes: &'a [u8]) -> Option<Self::DItem> {
-        Some(Set::new(bytes).ok()?)
+        Set::new(bytes).ok()
     }
 }
diff --git a/milli/src/update/facet/mod.rs b/milli/src/update/facet/mod.rs
index 4073ab8e5..0752f7c37 100644
--- a/milli/src/update/facet/mod.rs
+++ b/milli/src/update/facet/mod.rs
@@ -163,7 +163,7 @@ impl<'i> FacetsUpdate<'i> {
         let mut text_fsts = vec![];
         let mut current_fst: Option<(u16, fst::SetBuilder<Vec<u8>>)> = None;
         let database = self.index.facet_id_string_docids.remap_data_type::<DecodeIgnore>();
-        for result in database.iter(&wtxn)? {
+        for result in database.iter(wtxn)? {
             let (facet_group_key, _) = result?;
             if let FacetGroupKey { field_id, level: 0, left_bound } = facet_group_key {
                 current_fst = match current_fst.take() {