diff --git a/include/LedMqttSubscriber.h b/include/LedMqttSubscriber.h
index 8e5f9e7..6859847 100644
--- a/include/LedMqttSubscriber.h
+++ b/include/LedMqttSubscriber.h
@@ -15,8 +15,8 @@ public:
     void disconnect(); // 断开连接
 
     // 让外部可以访问最新的 gear 和 speed
-    int getGear() const { return gear; }
-    double getSpeed() const { return speed; }
+    int getGear() const;
+    double getSpeed() const;
     void checkTimeout(std::chrono::seconds timeout);
 
 private: