diff --git a/vllm_ascend/ops/common_fused_moe.py b/vllm_ascend/ops/common_fused_moe.py
index 412569d..3145b92 100644
--- a/vllm_ascend/ops/common_fused_moe.py
+++ b/vllm_ascend/ops/common_fused_moe.py
@@ -250,7 +250,8 @@ class AscendFusedMoE(FusedMoE):
                                         dtype=torch.int64).npu()
 
         eplb_enable = self.dynamic_eplb or (self.expert_map_path is not None)
-        if eplb_enable and (not isinstance(self.quant_method,
+        if eplb_enable and (not hasattr(self.quant_method, "quant_method") or
+                            not isinstance(self.quant_method.quant_method,
                                            AscendW8A8DynamicFusedMoEMethod)):
             raise ValueError("Eplb supports only w8a8_dynamic quantization.")