diff --git a/vllm/model_executor/layers/quantization/modelopt.py b/vllm/model_executor/layers/quantization/modelopt.py
index 0862efbea294..b2ed35cf92fd 100644
--- a/vllm/model_executor/layers/quantization/modelopt.py
+++ b/vllm/model_executor/layers/quantization/modelopt.py
@@ -245,7 +245,7 @@ def _extract_modelopt_quant_algo(
         """
         if hf_quant_cfg is None:
             return None
-        if hf_quant_cfg.get("quant_method", "").lower() != "modelopt":
+        if not hf_quant_cfg.get("quant_method", "").lower().startswith("modelopt"):
             return None
         if "quantization" in hf_quant_cfg:
             quant_config = hf_quant_cfg["quantization"]