diff --git a/vllm/lora/layers/fused_moe.py b/vllm/lora/layers/fused_moe.py
index e7bc61329d5aa..5a9fd35c2907a 100644
--- a/vllm/lora/layers/fused_moe.py
+++ b/vllm/lora/layers/fused_moe.py
@@ -405,3 +405,7 @@ class FusedMoEWithLoRA(BaseLayerWithLoRA):
     @property
     def quant_method(self):
         return self.base_layer.quant_method
+
+    @property
+    def is_internal_router(self) -> bool:
+        return self.base_layer.is_internal_router