diff --git a/src/QGCApplication.cc b/src/QGCApplication.cc
index 3a57c88..161609b 100644
--- a/src/QGCApplication.cc
+++ b/src/QGCApplication.cc
@@ -113,6 +113,12 @@
     #include "OpalLink.h"
 #endif
 
+#ifdef Q_OS_LINUX
+#ifndef __mobile__
+#include <unistd.h>
+#include <sys/types.h>
+#endif
+#endif
 
 QGCApplication* QGCApplication::_app = NULL;