diff --git a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
index 889b9eba0..915d83ded 100644
--- a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
+++ b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
@@ -1600,7 +1600,7 @@ class ConvolutionModule(nn.Module):
             channels, channel_dim=1,
             min_positive=ScheduledFloat((0.0, 0.1), (8000.0, 0.05)),
             max_positive=1.0,
-            min_abs=1.0,
+            min_abs=0.2,
             max_abs=ScheduledFloat((0.0, 10.0), (8000.0, 20.0), default=10),
         )