diff --git a/train_ms.py b/train_ms.py
index f2bf1a3..ad57ef1 100644
--- a/train_ms.py
+++ b/train_ms.py
@@ -141,7 +141,7 @@ def run(rank, n_gpus, hps):
         betas=hps.train.betas,
         eps=hps.train.eps)
     if net_dur_disc is not None:
-        optim_dur_disc = torch.optim.AdanW(
+        optim_dur_disc = torch.optim.AdamW(
         net_dur_disc.parameters(),
         hps.train.learning_rate,
         betas=hps.train.betas,