diff --git a/kws/utils/executor.py b/kws/utils/executor.py
index cebca58..b83a955 100644
--- a/kws/utils/executor.py
+++ b/kws/utils/executor.py
@@ -51,8 +51,7 @@ class Executor:
             if num_utts == 0:
                 continue
             logits = model(feats)
-            loss, acc = criterion(logits, target, feats_lengths,
-                                         min_duration)
+            loss, acc = criterion(logits, target, feats_lengths, min_duration)
             loss.backward()
             grad_norm = clip_grad_norm_(model.parameters(), clip)
             if torch.isfinite(grad_norm):