diff --git a/egs/librispeech/ASR/.prepare_vox.sh.swp b/egs/librispeech/ASR/.prepare_vox.sh.swp
index 3b2bbc20b..2595db0ac 100644
Binary files a/egs/librispeech/ASR/.prepare_vox.sh.swp and b/egs/librispeech/ASR/.prepare_vox.sh.swp differ
diff --git a/egs/librispeech/ASR/prepare_vox.sh b/egs/librispeech/ASR/prepare_vox.sh
index a896ed149..55dc0d03b 100755
--- a/egs/librispeech/ASR/prepare_vox.sh
+++ b/egs/librispeech/ASR/prepare_vox.sh
@@ -101,7 +101,7 @@ if [ $stage -le 1 ] && [ $stop_stage -ge 1 ]; then
 		for spk in $dl_dir/$dest/*; do
 			spk_id=${spk#*$dest\/}
 			echo $spk_id
-    		python local/prepare_vox.py $spk {$dest}_{$spk_id}
+    		python local/prepare_vox.py $spk "$dest"_"$spk_id"
 		done
 	done
     #touch data/manifests/.vox.done