diff --git a/deepmd/op/_tabulate_grad.py b/deepmd/op/_tabulate_grad.py
index 9076ee3213..7cc7532a39 100644
--- a/deepmd/op/_tabulate_grad.py
+++ b/deepmd/op/_tabulate_grad.py
@@ -55,7 +55,7 @@ def _tabulate_fusion_se_atten_grad_cc(op, dy):
         op.outputs[0],
         is_sorted=op.get_attr("is_sorted"),
     )
-    return [None, None, dy_dx, dy_df, None]
+    return [None, None, dy_dx, dy_df, dy_dtwo]
 
 
 @ops.RegisterGradient("TabulateFusionSeAttenGrad")