diff --git a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
index 383bba13d..61abf7f2d 100644
--- a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
+++ b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
@@ -1488,7 +1488,7 @@ class NonlinAttentionModule(nn.Module):
                                      initial_scale=0.05)
 
         self.whiten = Whiten(num_groups=1,
-                             whitening_limit=_whitening_schedule(7.5),
+                             whitening_limit=_whitening_schedule(5.0),
                              prob=(0.025, 0.25),
                              grad_scale=0.01)