1 files changed, 1 insertions, 1 deletions
diff --git a/src/designer/src/lib/shared/previewconfigurationwidget_p.h b/src/designer/src/lib/shared/previewconfigurationwidget_p.h
index 621f46a51..c469cef2d 100644
--- a/src/designer/src/lib/shared/previewconfigurationwidget_p.h
+++ b/src/designer/src/lib/shared/previewconfigurationwidget_p.h
@@ -59,7 +59,7 @@ class QDESIGNER_SHARED_EXPORT PreviewConfigurationWidget : public QGroupBox
     Q_OBJECT
 public:
     explicit PreviewConfigurationWidget(QDesignerFormEditorInterface *core,
-                                        QWidget *parent = 0);
+                                        QWidget *parent = nullptr);
     ~PreviewConfigurationWidget() override;
     void saveState();