diff --git a/ppcls/loss/__init__.py b/ppcls/loss/__init__.py
index 47dfc246e604791f6bcb841e9a970a739f6f3a62..006b54eb3f7498b3dd860bc143b51488c7aee340 100644
--- a/ppcls/loss/__init__.py
+++ b/ppcls/loss/__init__.py
@@ -94,7 +94,7 @@ class CombinedLoss(nn.Layer):
             loss_dict["loss"] = paddle.add_n(list(loss_dict.values()))
 
         if self.scaler:
-            self.scaler.scale(loss_dict["loss"])
+            self.scaler(loss_dict["loss"])
         return loss_dict