diff --git a/egs/librispeech/ASR/local/.compute_fbank_vox.py.swp b/egs/librispeech/ASR/local/.compute_fbank_vox.py.swp
index 00fc8bb15..226a1165c 100644
Binary files a/egs/librispeech/ASR/local/.compute_fbank_vox.py.swp and b/egs/librispeech/ASR/local/.compute_fbank_vox.py.swp differ
diff --git a/egs/librispeech/ASR/local/compute_fbank_vox.py b/egs/librispeech/ASR/local/compute_fbank_vox.py
index 877662420..45c4b47d6 100755
--- a/egs/librispeech/ASR/local/compute_fbank_vox.py
+++ b/egs/librispeech/ASR/local/compute_fbank_vox.py
@@ -36,7 +36,7 @@ from filter_cuts import filter_cuts
 from lhotse import CutSet, Fbank, FbankConfig, LilcomChunkyWriter
 from lhotse.recipes.utils import read_manifests_if_cached
 
-from icefall.utils import get_executor
+from icefall.utils import get_executor, str2bool
 
 # Torch's multithreaded behavior needs to be disabled or
 # it wastes a lot of CPU and slow things down.