diff --git a/bert_pytorch/trainer/pretrain.py b/bert_pytorch/trainer/pretrain.py
index 0b882dd..670a389 100644
--- a/bert_pytorch/trainer/pretrain.py
+++ b/bert_pytorch/trainer/pretrain.py
@@ -75,7 +75,7 @@ def iteration(self, epoch, data_loader, train=True):
         """
         loop over the data_loader for training or testing
         if on train status, backward operation is activated
-        and also auto save the model every peoch
+        and also auto save the model every epoch
 
         :param epoch: current epoch index
         :param data_loader: torch.utils.data.DataLoader for iteration