diff --git a/libretroshare/src/rsserver/p3face-server.cc b/libretroshare/src/rsserver/p3face-server.cc
index b8d1552dc..9be996372 100644
--- a/libretroshare/src/rsserver/p3face-server.cc
+++ b/libretroshare/src/rsserver/p3face-server.cc
@@ -83,7 +83,8 @@ const double RsServer::kickLimit = 0.15;
 
 
 RsServer::RsServer() :
-    coreMutex("RsServer"), coreReady(false)
+    coreMutex("RsServer"), mShutdownCallback([](int){}),
+    coreReady(false)
 {
 	// This is needed asap.
 	//