diff --git a/research/Matroyshka_reranker/inference/rank_model.py b/research/Matroyshka_reranker/inference/rank_model.py
index 2972a7d..bbdca4c 100644
--- a/research/Matroyshka_reranker/inference/rank_model.py
+++ b/research/Matroyshka_reranker/inference/rank_model.py
@@ -96,7 +96,8 @@ class MatroyshkaReranker(AbsReranker):
         self.tokenizer = AutoTokenizer.from_pretrained(
             model_name_or_path,
             cache_dir=cache_dir,
-            trust_remote_code=trust_remote_code
+            trust_remote_code=trust_remote_code,
+            use_fast=False,
         )
         self.tokenizer.padding_side = 'right'