diff --git a/egs/multi_ja_en/ASR/local/prepare_for_bpe_model.py b/egs/multi_ja_en/ASR/local/prepare_for_bpe_model.py
old mode 100644
new mode 100755
index 8b179f6a8..70846140b
--- a/egs/multi_ja_en/ASR/local/prepare_for_bpe_model.py
+++ b/egs/multi_ja_en/ASR/local/prepare_for_bpe_model.py
@@ -20,6 +20,7 @@
 # to train the BPE model later.
 
 import argparse
+import re
 from pathlib import Path
 
 from tqdm.auto import tqdm
diff --git a/egs/multi_ja_en/ASR/local/train_bbpe_model.py b/egs/multi_ja_en/ASR/local/train_bbpe_model.py
index c66c52312..b86ddd5d7 100755
--- a/egs/multi_ja_en/ASR/local/train_bbpe_model.py
+++ b/egs/multi_ja_en/ASR/local/train_bbpe_model.py
@@ -25,6 +25,7 @@
 # Please install a version >=0.1.96
 
 import argparse
+import re
 import shutil
 import tempfile
 from pathlib import Path