--- a/src/gui/messagepreviewer.cpp	2019-06-04 13:16:48.000000000 +0200
+++ b/src/gui/messagepreviewer.cpp	2020-01-05 17:26:13.405430006 +0100
@@ -9,6 +9,7 @@
 #include "network-web/webfactory.h"
 #include "services/abstract/serviceroot.h"
 
+#include <QKeyEvent>
 #include <QScrollBar>
 #include <QToolBar>
 #include <QToolTip>