diff --git a/src/client/connection_thread.cpp b/src/client/connection_thread.cpp
--- a/src/client/connection_thread.cpp
+++ b/src/client/connection_thread.cpp
@@ -218,6 +218,7 @@
     ConnectionThread *ct = new ConnectionThread(parent);
     ct->d->foreign = true;
     ct->d->display = display;
+    connect(native, &QObject::destroyed, ct, &ConnectionThread::connectionDied);
     return ct;
 }