diff --git a/python/sglang/srt/layers/moe/topk.py b/python/sglang/srt/layers/moe/topk.py
index 1b23554f7..a355707be 100644
--- a/python/sglang/srt/layers/moe/topk.py
+++ b/python/sglang/srt/layers/moe/topk.py
@@ -652,6 +652,8 @@ def fused_topk_torch_native(
             return gating_output.softmax(dim=-1)
         elif scoring_func == "sigmoid":
             return gating_output.sigmoid()
+        elif scoring_func == "sqrtsoftplus":
+            return F.softplus(gating_output).sqrt()
         else:
             raise ValueError(f"Invalid scoring function: {scoring_func}")