diff --git a/paddlespeech/t2s/models/jets/generator.py b/paddlespeech/t2s/models/jets/generator.py
index d2bd4102d..b441769b9 100644
--- a/paddlespeech/t2s/models/jets/generator.py
+++ b/paddlespeech/t2s/models/jets/generator.py
@@ -28,7 +28,6 @@ from typing import Tuple
 import numpy as np
 import paddle
 from paddle import nn
-from typeguard import typechecked
 
 from paddlespeech.t2s.models.hifigan import HiFiGANGenerator
 from paddlespeech.t2s.models.jets.alignments import AlignmentModule