diff --git a/src/gui/painting/qbrush.cpp b/src/gui/painting/qbrush.cpp
index 4400abad4f..60d0b41624 100644
--- a/src/gui/painting/qbrush.cpp
+++ b/src/gui/painting/qbrush.cpp
@@ -571,11 +571,6 @@ QBrush::~QBrush()
 {
 }
 
-void QBrush::cleanUp(QBrushData *x)
-{
-    QBrushDataPointerDeleter::deleteData(x);
-}
-
 static constexpr inline bool use_same_brushdata(Qt::BrushStyle lhs, Qt::BrushStyle rhs)
 {
     return lhs == rhs // includes Qt::TexturePattern
diff --git a/src/gui/painting/qbrush.h b/src/gui/painting/qbrush.h
index fea5afad57..5ab9e88443 100644
--- a/src/gui/painting/qbrush.h
+++ b/src/gui/painting/qbrush.h
@@ -116,7 +116,6 @@ private:
     void detach(Qt::BrushStyle newStyle);
     void init(const QColor &color, Qt::BrushStyle bs);
     QScopedPointer<QBrushData, QBrushDataPointerDeleter> d;
-    void cleanUp(QBrushData *x);
 
 public:
     inline bool isDetached() const;