diff --git a/paddlespeech/t2s/modules/predictor/length_regulator.py b/paddlespeech/t2s/modules/predictor/length_regulator.py
index 11f28408..e4fbf549 100644
--- a/paddlespeech/t2s/modules/predictor/length_regulator.py
+++ b/paddlespeech/t2s/modules/predictor/length_regulator.py
@@ -49,9 +49,9 @@ class LengthRegulator(nn.Layer):
         encodings: (B, T, C)
         durations: (B, T)
         """
-        #batch_size, t_enc = durations.shape
-        batch_size = paddle.shape(durations)[0]
-        t_enc = paddle.shape(durations)[1]
+        #batch_size, t_enc = durations.shape  # linux
+        batch_size = paddle.shape(durations)[0]  # windows and mac
+        t_enc = paddle.shape(durations)[1]  # windows and mac
         durations = durations.numpy()
         slens = np.sum(durations, -1)
         t_dec = np.max(slens)