diff --git a/gui/src/forms/subdatawidget.h b/gui/src/forms/subdatawidget.h
index f6f1129..103f25c 100644
--- a/gui/src/forms/subdatawidget.h
+++ b/gui/src/forms/subdatawidget.h
@@ -15,6 +15,7 @@
 #ifndef SUBDATAWIDGET_H
 #define SUBDATAWIDGET_H
 
+#include <QIcon>
 #include <QWidget>
 #include "ui_subDataWidget.h"