diff --git a/paddlespeech/t2s/modules/predictor/duration_predictor.py b/paddlespeech/t2s/modules/predictor/duration_predictor.py
index 6d7adf236d285db283b0a3558c1ad086c59a3108..6b7c6a6bef206388c1e6ec7853ea6378e7b2434d 100644
--- a/paddlespeech/t2s/modules/predictor/duration_predictor.py
+++ b/paddlespeech/t2s/modules/predictor/duration_predictor.py
@@ -115,8 +115,8 @@ class DurationPredictor(nn.Layer):
 
         Returns
         ----------
-            Tensor
-                Batch of predicted durations in log domain (B, Tmax).
+        Tensor
+            Batch of predicted durations in log domain (B, Tmax).
         """
         return self._forward(xs, x_masks, False)