diff --git a/src/muebtransmitter_p.h b/src/muebtransmitter_p.h
index 8b5d05085acde2968fc1331b5defb56b0ed4f772..abe0001f881b41e2077f1e117334ce8748f53349 100644
--- a/src/muebtransmitter_p.h
+++ b/src/muebtransmitter_p.h
@@ -6,6 +6,7 @@
 #include <QNetworkDatagram>
 #include <QUdpSocket>
 #include <QtConcurrent>
+#include <functional>
 
 #include "configuration.h"
 #include "muebtransmitter.h"