diff --git a/python/sglang/srt/layers/attention/nsa/nsa_indexer.py b/python/sglang/srt/layers/attention/nsa/nsa_indexer.py
index 087e228796b0..51ba1bcab7fc 100644
--- a/python/sglang/srt/layers/attention/nsa/nsa_indexer.py
+++ b/python/sglang/srt/layers/attention/nsa/nsa_indexer.py
@@ -123,11 +123,13 @@ def topk_transform(
 
 
 def rotate_activation(x: torch.Tensor) -> torch.Tensor:
-    # from sgl_kernel import hadamard_transform
     if _is_hip or _is_sm103:
         from fast_hadamard_transform import hadamard_transform
     else:
-        from sgl_kernel import hadamard_transform
+        try:
+            from sgl_kernel import hadamard_transform
+        except ImportError:
+            from fast_hadamard_transform import hadamard_transform
 
     hidden_size = x.size(-1)
     assert (