diff --git a/ppcls/losses/triplet.py b/ppcls/losses/triplet.py
index a8b1a17c750f4da4f8c99973443e83d4a08663bb..beef5def0f4a981df9e5baf1c1832a3bde2899f8 100644
--- a/ppcls/losses/triplet.py
+++ b/ppcls/losses/triplet.py
@@ -141,3 +141,4 @@ class TripletLoss(nn.Layer):
         y = paddle.ones_like(dist_an)
         loss = self.ranking_loss(dist_an, dist_ap, y)
         return {"TripletLoss": loss}
+