diff --git a/egs/libriheavy/LM/zipformer1/subformer.py b/egs/libriheavy/LM/zipformer1/subformer.py
index d4b761a0a..baf0ed914 100644
--- a/egs/libriheavy/LM/zipformer1/subformer.py
+++ b/egs/libriheavy/LM/zipformer1/subformer.py
@@ -820,7 +820,7 @@ class LearnedDownsamplingModule(nn.Module):
         self.score_balancer = Balancer(1, channel_dim=-1,
                                        min_positive=1/(2*downsampling_factor),
                                        max_positive=0.6,
-                               min_abs=1.0)
+                                       min_abs=1.0)
 
         # below are for diagnostics.
         self.copy_weights1 = nn.Identity()