--- ./src/qtsingleapplication/qtlocalpeer.cpp~	2015-11-13 17:48:44.000000000 +0100
+++ ./src/qtsingleapplication/qtlocalpeer.cpp	2015-12-07 10:20:04.642565100 +0100
@@ -38,7 +38,7 @@
 **
 ****************************************************************************/
 
-
+#include <unistd.h>
 #include "qtlocalpeer.h"
 #include <QCoreApplication>
 #include <QDataStream>