diff --git a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
index 9403cc7d8..735f08d98 100644
--- a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
+++ b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
@@ -1633,7 +1633,7 @@ class ConvolutionModule(nn.Module):
             bottleneck_dim, channel_dim=1,
             min_positive=ScheduledFloat((0.0, 0.1), (8000.0, 0.05)),
             max_positive=1.0,
-            min_abs=ScheduledFloat((0.0, 0.2), (20000.0, 1.0)),
+            min_abs=ScheduledFloat((0.0, 0.2), (20000.0, 0.75)),
             max_abs=10.0,
         )