diff --git a/tools/preprocess_data.py b/tools/preprocess_data.py
index 399f93c10e..652897a658 100644
--- a/tools/preprocess_data.py
+++ b/tools/preprocess_data.py
@@ -193,8 +193,10 @@ def get_args():
     group.add_argument('--tokenizer-type', type=str, required=True,
                        choices=['BertWordPieceLowerCase','BertWordPieceCase',
                                 'GPT2BPETokenizer', 'SentencePieceTokenizer',
-                                'GPTSentencePieceTokenizer', 'NullTokenizer'],
+                                'GPTSentencePieceTokenizer', 'NullTokenizer', 'HFTokenizer'],
                        help='What type of tokenizer to use.')
+    group.add_argument('--seq-length', type=int, default=1024,
+                       help='The length of the packed inputs.')
     group.add_argument('--tokenizer-model', type=str, default=None,
                        help='YTTM tokenizer model.')
     group.add_argument('--vocab-file', type=str, default=None,