diff --git a/development/lyxserver/server_monitor.cpp b/development/lyxserver/server_monitor.cpp
index 21eb4194fe..dc4f15d05a 100644
--- a/development/lyxserver/server_monitor.cpp
+++ b/development/lyxserver/server_monitor.cpp
@@ -41,6 +41,9 @@
 #include <QApplication>
 #include <QtGui>
 #include <QtDebug>
+#if QT_VERSION >= 0x050000
+#include <QtWidgets>
+#endif
 
 #include "server_monitor.h"
 
diff --git a/development/lyxserver/server_monitor.h b/development/lyxserver/server_monitor.h
index 32d035e448..5f8c628f98 100644
--- a/development/lyxserver/server_monitor.h
+++ b/development/lyxserver/server_monitor.h
@@ -13,6 +13,7 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include <QDialog>
 #include <QFile>
diff --git a/development/lyxserver/server_monitor.pro b/development/lyxserver/server_monitor.pro
index c10e19dd98..934b176778 100644
--- a/development/lyxserver/server_monitor.pro
+++ b/development/lyxserver/server_monitor.pro
@@ -1,2 +1,4 @@
+CONFIG += console
 HEADERS += server_monitor.h
 SOURCES += server_monitor.cpp
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets