diff --git a/src/gui/progressbarpainter.h b/src/gui/progressbarpainter.h
index 31ddba72f..29156134b 100644
--- a/src/gui/progressbarpainter.h
+++ b/src/gui/progressbarpainter.h
@@ -43,7 +43,7 @@ class ProgressBarPainter : public QObject
 public:
     explicit ProgressBarPainter(QObject *parent = nullptr);
 
-    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QString &text, int progress, QColor color = nullptr) const;
+    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QString &text, int progress, const QColor &color = {}) const;
 
 private:
     void applyUITheme();