diff --git a/gui_qt/basepreview.h b/gui_qt/basepreview.h
index 73a74f5..f29b209 100644
--- a/gui_qt/basepreview.h
+++ b/gui_qt/basepreview.h
@@ -8,6 +8,7 @@
 #include <QVector>
 #include <QList>
 #include <QLabel>
+#include <QHash>
 #include "previewosd.h"
 #include "../lib_paysages/pack.h"