diff --git a/src/rtsp_manager.cpp b/src/rtsp_manager.cpp
index 1e7ef84..63b256e 100644
--- a/src/rtsp_manager.cpp
+++ b/src/rtsp_manager.cpp
@@ -34,7 +34,7 @@ GstRTSPMediaFactory *RTSPManager::create_media_factory(const Camera &cam)
 
     // 连接 media-created 信号，跟踪媒体对象
     g_signal_connect_data(factory, "media-created", G_CALLBACK(on_media_created), g_strdup(cam.name.c_str()),
-                          (GClosureNotify)g_free, 0);
+                          (GClosureNotify)g_free, static_cast<GConnectFlags>(0));
 
     return factory;
 }