diff -Nru a/src/dialogs/preferences.cpp b/src/dialogs/preferences.cpp
--- a/src/dialogs/preferences.cpp	2017-03-30 16:08:33.000000000 +0200
+++ b/src/dialogs/preferences.cpp	2018-06-04 06:11:56.890313611 +0200
@@ -21,6 +21,7 @@
 #include "engineoptiondialog.h"
 #include "downloadmanager.h"
 
+#include <QAction>
 #include <QCheckBox>
 #include <QColorDialog>
 #include <QComboBox>
diff -Nru a/src/dialogs/savedialog.cpp b/src/dialogs/savedialog.cpp
--- a/src/dialogs/savedialog.cpp	2016-03-12 16:18:16.000000000 +0100
+++ b/src/dialogs/savedialog.cpp	2018-06-04 06:12:49.341668576 +0200
@@ -22,6 +22,7 @@
 #include "settings.h"
 #include "tags.h"
 
+#include <QButtonGroup>
 #include <QLineEdit>
 #include <QCompleter>
 
diff -Nru a/src/gui/gamewindow.cpp b/src/gui/gamewindow.cpp
--- a/src/gui/gamewindow.cpp	2015-12-31 10:16:50.000000000 +0100
+++ b/src/gui/gamewindow.cpp	2018-06-04 06:19:10.636206966 +0200
@@ -8,6 +8,7 @@
 #include "nag.h"
 #include "settings.h"
 
+#include <QAction>
 #include <QToolButton>
 
 #if defined(_MSC_VER) && defined(_DEBUG)