diff --git a/egs/librispeech/ASR/tdnn_lstm_ctc/asr_datamodule.py b/egs/librispeech/ASR/tdnn_lstm_ctc/asr_datamodule.py
index 4953e8538..229575db6 100644
--- a/egs/librispeech/ASR/tdnn_lstm_ctc/asr_datamodule.py
+++ b/egs/librispeech/ASR/tdnn_lstm_ctc/asr_datamodule.py
@@ -305,7 +305,10 @@ class LibriSpeechAsrDataModule(DataModule):
             )
             logging.debug("About to create test dataloader")
             test_dl = DataLoader(
-                test, batch_size=None, sampler=sampler, num_workers=self.args.num_workers
+                test,
+                batch_size=None,
+                sampler=sampler,
+                num_workers=self.args.num_workers,
             )
             test_loaders.append(test_dl)
 
diff --git a/egs/yesno/ASR/tdnn/asr_datamodule.py b/egs/yesno/ASR/tdnn/asr_datamodule.py
index a9a6145f0..832fd556e 100644
--- a/egs/yesno/ASR/tdnn/asr_datamodule.py
+++ b/egs/yesno/ASR/tdnn/asr_datamodule.py
@@ -230,7 +230,10 @@ class YesNoAsrDataModule(DataModule):
         )
         logging.debug("About to create test dataloader")
         test_dl = DataLoader(
-            test, batch_size=None, sampler=sampler, num_workers=self.args.num_workers
+            test,
+            batch_size=None,
+            sampler=sampler,
+            num_workers=self.args.num_workers,
         )
         return test_dl