diff --git a/egs/librispeech/ASR/.prepare_4446.sh.swp b/egs/librispeech/ASR/.prepare_4446.sh.swp
index 1d3689682..401b2bb2c 100644
Binary files a/egs/librispeech/ASR/.prepare_4446.sh.swp and b/egs/librispeech/ASR/.prepare_4446.sh.swp differ
diff --git a/egs/librispeech/ASR/prepare_4446.sh b/egs/librispeech/ASR/prepare_4446.sh
index 51cd0d6aa..83c2ab79a 100755
--- a/egs/librispeech/ASR/prepare_4446.sh
+++ b/egs/librispeech/ASR/prepare_4446.sh
@@ -51,6 +51,7 @@ vocab_sizes=(
   500
 )
 
+spk_id=$1
 # All files generated by this script are saved in "data".
 # You can safely remove "data" and rerun this script to regenerate it.
 mkdir -p data