diff --git a/raftstore-proxy/ffi/src/RaftStoreProxyFFI/ProxyFFI.h b/raftstore-proxy/ffi/src/RaftStoreProxyFFI/ProxyFFI.h
index 326e9302c03..3dd1feba12a 100644
--- a/raftstore-proxy/ffi/src/RaftStoreProxyFFI/ProxyFFI.h
+++ b/raftstore-proxy/ffi/src/RaftStoreProxyFFI/ProxyFFI.h
@@ -394,8 +394,14 @@ struct EngineStoreServerHelper {
                                           ReportThreadAllocateInfoBatch data);
 };
 
+#ifdef __cplusplus
+extern "C" {
+#endif
 // Basically same as ffi_server_info, but no need to setup ProxyHelper, only
 // need to setup ServerHelper. Used when proxy not start.
 uint32_t ffi_get_server_info_from_proxy(intptr_t, BaseBuffView, RawVoidPtr);
+#ifdef __cplusplus
+}
+#endif
 
 }  // namespace DB