diff --git a/src/turn/turn_transport.h b/src/turn/turn_transport.h
index b872454..37626b8 100644
--- a/src/turn/turn_transport.h
+++ b/src/turn/turn_transport.h
@@ -17,6 +17,7 @@
 #pragma once
 
 #include "ip_utils.h"
+#include "pj_init_lock.h"
 #include "turn_params.h"
 
 #include <opendht/logger.h>
@@ -48,6 +49,7 @@
 
 private:
     TurnTransport() = delete;
+    PjInitLock pjInitLock_;
     class Impl;
     std::unique_ptr<Impl> pimpl_;
 };