diff --git a/bert_pytorch/model/embedding/position.py b/bert_pytorch/model/embedding/position.py
index d1d7e81..d55c224 100644
--- a/bert_pytorch/model/embedding/position.py
+++ b/bert_pytorch/model/embedding/position.py
@@ -13,7 +13,7 @@ def __init__(self, d_model, max_len=512):
         pe.require_grad = False
 
         position = torch.arange(0, max_len).float().unsqueeze(1)
-        div_term = (torch.arange(0, d_model, 2) * -(math.log(10000.0) / d_model)).float().exp()
+        div_term = (torch.arange(0, d_model, 2).float() * -(math.log(10000.0) / d_model)).exp()
 
         pe[:, 0::2] = torch.sin(position * div_term)
         pe[:, 1::2] = torch.cos(position * div_term)