diff --git a/src/pytorch_metric_learning/losses/cosface_loss.py b/src/pytorch_metric_learning/losses/cosface_loss.py
index 2371ed99..e18c3265 100644
--- a/src/pytorch_metric_learning/losses/cosface_loss.py
+++ b/src/pytorch_metric_learning/losses/cosface_loss.py
@@ -6,7 +6,7 @@
 
 class CosFaceLoss(LargeMarginSoftmaxLoss):
     """
-    Implementation of https://arxiv.org/pdf/1801.07698.pdf
+    Implementation of https://arxiv.org/abs/1801.09414
     """
 
     def __init__(self, *args, margin=0.35, scale=64, **kwargs):