diff --git a/meilidb-core/src/automaton/mod.rs b/meilidb-core/src/automaton/mod.rs
index d9c7fcee1..090232421 100644
--- a/meilidb-core/src/automaton/mod.rs
+++ b/meilidb-core/src/automaton/mod.rs
@@ -284,7 +284,11 @@ fn generate_automatons(
     // we keep the original automatons at the front.
     automatons[1..].sort_by_key(|group| {
         let a = group.automatons.first().unwrap();
-        (Reverse(a.is_exact), a.ngram)
+        (
+            Reverse(a.is_exact),
+            a.ngram,
+            Reverse(group.automatons.len()),
+        )
     });
 
     Ok((automatons, enhancer_builder.build()))
diff --git a/meilidb-core/src/update/clear_all.rs b/meilidb-core/src/update/clear_all.rs
index b4b1ab9bd..1612f11d2 100644
--- a/meilidb-core/src/update/clear_all.rs
+++ b/meilidb-core/src/update/clear_all.rs
@@ -1,8 +1,5 @@
-use meilidb_schema::{Diff, Schema};
-
-use crate::update::documents_addition::reindex_all_documents;
 use crate::update::{next_update_id, Update};
-use crate::{error::UnsupportedOperation, store, MResult, RankedMap};
+use crate::{store, MResult, RankedMap};
 
 pub fn apply_clear_all(
     writer: &mut heed::RwTxn,