1 files changed, 5 insertions, 3 deletions
diff --git a/src/qt/utilitydialog.h b/src/qt/utilitydialog.h
index f1cedff282..833b86fd3e 100644
--- a/src/qt/utilitydialog.h
+++ b/src/qt/utilitydialog.h
@@ -6,9 +6,11 @@
 #define BITCOIN_QT_UTILITYDIALOG_H
 
 #include <QDialog>
-#include <QObject>
+#include <QWidget>
 
-class BitcoinGUI;
+QT_BEGIN_NAMESPACE
+class QMainWindow;
+QT_END_NAMESPACE
 
 namespace interfaces {
     class Node;
@@ -46,7 +48,7 @@ class ShutdownWindow : public QWidget
 
 public:
     explicit ShutdownWindow(QWidget *parent=nullptr, Qt::WindowFlags f=Qt::Widget);
-    static QWidget *showShutdownWindow(BitcoinGUI *window);
+    static QWidget* showShutdownWindow(QMainWindow* window);
 
 protected:
     void closeEvent(QCloseEvent *event);