diff --git a/python/sglang/srt/server_args.py b/python/sglang/srt/server_args.py
index ac774b82a336..2658b29b23e7 100644
--- a/python/sglang/srt/server_args.py
+++ b/python/sglang/srt/server_args.py
@@ -4264,8 +4264,8 @@ def _validate_mamba_extra_buffer(self, view, model_arch: str):
             view, model_arch
         ), f"extra_buffer is not supported for {model_arch}; use no_buffer."
         assert (
-            is_cuda() or is_musa() or is_npu()
-        ), "extra_buffer needs CUDA/MUSA/NPU (FLA)."
+            is_cuda() or is_musa() or is_npu() or is_hip()
+        ), "extra_buffer needs CUDA/MUSA/NPU/ROCm (FLA)."
         if view.speculative_num_draft_tokens is not None:
             assert (
                 view.mamba_radix_cache_strategy != "extra_buffer_lazy"