diff --git a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
index 87b5fd4f2..2470c25c8 100644
--- a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
+++ b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
@@ -1899,7 +1899,7 @@ class Conv2dSubsampling(nn.Module):
         x = self.out_whiten(x)
         x = self.out_norm(x)
         x = self.dropout(x)
-        return 4.0 * x
+        return x
 
 class AttentionCombine(nn.Module):
     """