diff --git a/python/sglang/srt/entrypoints/grpc_server.py b/python/sglang/srt/entrypoints/grpc_server.py
index 674431bf4..b0188a137 100644
--- a/python/sglang/srt/entrypoints/grpc_server.py
+++ b/python/sglang/srt/entrypoints/grpc_server.py
@@ -7,9 +7,11 @@ async def serve_grpc(server_args, model_info=None):
     """Start the standalone gRPC server with integrated scheduler."""
     try:
         from smg_grpc_servicer.sglang.server import serve_grpc as _serve_grpc
-    except ImportError:
+    except ImportError as e:
         raise ImportError(
             "gRPC mode requires the smg-grpc-servicer package. "
-            "Install it with: pip install smg-grpc-servicer[sglang]"
-        ) from None
+            "If not installed, run: pip install smg-grpc-servicer[sglang]. "
+            "If already installed, there may be a broken import due to a "
+            "version mismatch — see the chained exception above for details."
+        ) from e
     await _serve_grpc(server_args, model_info)