diff -ruN hydrogen-1.2.2.orig/src/gui/src/Widgets/FileDialog.h hydrogen-1.2.2/src/gui/src/Widgets/FileDialog.h
--- hydrogen-1.2.2.orig/src/gui/src/Widgets/FileDialog.h	2024-02-06 23:21:52.516707059 +0100
+++ hydrogen-1.2.2/src/gui/src/Widgets/FileDialog.h	2024-02-06 23:19:33.433991583 +0100
@@ -23,6 +23,7 @@
 #define FILEDIALOG_H
 
 #include <QDialog>
+#include <QFileDialog>
 #include <core/Object.h>
 
 /** Custom file dialog checking whether the user has write access to