diff --git a/core/subsurface-qt/SettingsObjectWrapper.h b/core/subsurface-qt/SettingsObjectWrapper.h
index 3a2568f98..df9a13289 100644
--- a/core/subsurface-qt/SettingsObjectWrapper.h
+++ b/core/subsurface-qt/SettingsObjectWrapper.h
@@ -2,6 +2,7 @@
 #define SETTINGSOBJECTWRAPPER_H
 
 #include <QObject>
+#include <QDate>
 
 #include "../pref.h"
 #include "../prefs-macros.h"