diff --git a/util/RTCContext.cpp b/util/RTCContext.cpp
index 7dd0b0e..62f4ac3 100644
--- a/util/RTCContext.cpp
+++ b/util/RTCContext.cpp
@@ -1,5 +1,5 @@
 #include "RTCContext.h"
-//#define GIL
+#define GIL
 
 void RTCContext::onRoom(uint32_t typeId, RTCENGINE_NAMESPACE::MRTCRoomInfo& roomInfo) {
     //std::cout << "RTCContext::onRoom():" << roomInfo.roomId << "," << roomInfo.displayName << "," << roomInfo.userId << "," << roomInfo.message;