diff -Nru a/app/optionsdialog.cpp b/app/optionsdialog.cpp
--- a/app/optionsdialog.cpp	2016-03-28 13:48:50.000000000 +0200
+++ b/app/optionsdialog.cpp	2018-06-05 07:28:09.086517828 +0200
@@ -17,6 +17,7 @@
 #include "optionsdialog.h"
 #include "ui_optionsdialog.h"
 
+#include <QAction>
 #include <QFontComboBox>
 #include <QItemEditorFactory>
 #include <QKeySequence>