diff --git a/python/sglang/srt/layers/quantization/fp8_kernel.py b/python/sglang/srt/layers/quantization/fp8_kernel.py
index 2be8a8cf5..4a3d1093d 100644
--- a/python/sglang/srt/layers/quantization/fp8_kernel.py
+++ b/python/sglang/srt/layers/quantization/fp8_kernel.py
@@ -45,6 +45,10 @@ _use_aiter = get_bool_env_var("SGLANG_USE_AITER") and _is_hip
 if _is_cuda:
     from sgl_kernel import sgl_per_tensor_quant_fp8, sgl_per_token_quant_fp8
 
+    @torch.library.register_fake("sgl_kernel::sgl_per_tensor_quant_fp8")
+    def _sgl_per_tensor_quant_fp8(input, output_q, output_s, is_static):
+        return
+
     # Temporary
     try:
         from sgl_kernel import sgl_per_token_group_quant_8bit