diff --git a/src/layouts/QskGridBox.cpp b/src/layouts/QskGridBox.cpp
index a3b75d2c..6bb4d914 100644
--- a/src/layouts/QskGridBox.cpp
+++ b/src/layouts/QskGridBox.cpp
@@ -484,7 +484,7 @@ bool QskGridBox::event( QEvent* event )
     return Inherited::event( event );
 }
 
-void QskGridBox::dump()
+void QskGridBox::dump() const
 {
     const auto& engine = m_data->engine;
 
diff --git a/src/layouts/QskGridBox.h b/src/layouts/QskGridBox.h
index 17208507..5f18cee3 100644
--- a/src/layouts/QskGridBox.h
+++ b/src/layouts/QskGridBox.h
@@ -86,7 +86,7 @@ class QSK_EXPORT QskGridBox : public QskBox
     Q_INVOKABLE void setRowFixedHeight( int row, qreal height );
     Q_INVOKABLE void setColumnFixedWidth( int column, qreal width );
 
-    void dump();
+    void dump() const;
 
   public Q_SLOTS:
     void invalidate();
diff --git a/src/layouts/QskLinearBox.cpp b/src/layouts/QskLinearBox.cpp
index 94afff4b..9c965fa3 100644
--- a/src/layouts/QskLinearBox.cpp
+++ b/src/layouts/QskLinearBox.cpp
@@ -529,7 +529,7 @@ int QskLinearBox::stretchFactor( const QQuickItem* item ) const
     return stretchFactor( indexOf( item ) );
 }
 
-void QskLinearBox::dump()
+void QskLinearBox::dump() const
 {
     const auto& engine = m_data->engine;
 
diff --git a/src/layouts/QskLinearBox.h b/src/layouts/QskLinearBox.h
index 1288ff4e..c6e08ecc 100644
--- a/src/layouts/QskLinearBox.h
+++ b/src/layouts/QskLinearBox.h
@@ -84,7 +84,7 @@ class QSK_EXPORT QskLinearBox : public QskIndexedLayoutBox
     void setStretchFactor( const QQuickItem*, int stretchFactor );
     int stretchFactor( const QQuickItem* ) const;
 
-    void dump();
+    void dump() const;
 
   public Q_SLOTS:
     void transpose();
diff --git a/src/layouts/QskStackBox.cpp b/src/layouts/QskStackBox.cpp
index 7ee11a1a..d7f93657 100644
--- a/src/layouts/QskStackBox.cpp
+++ b/src/layouts/QskStackBox.cpp
@@ -417,7 +417,7 @@ bool QskStackBox::event( QEvent* event )
     return Inherited::event( event );
 }
 
-void QskStackBox::dump()
+void QskStackBox::dump() const
 {
     auto debug = qDebug();
 
diff --git a/src/layouts/QskStackBox.h b/src/layouts/QskStackBox.h
index 9b59f520..c6cc5cc9 100644
--- a/src/layouts/QskStackBox.h
+++ b/src/layouts/QskStackBox.h
@@ -55,7 +55,7 @@ class QSK_EXPORT QskStackBox : public QskIndexedLayoutBox
 
     QRectF geometryForItemAt( int index ) const;
 
-    void dump();
+    void dump() const;
 
   Q_SIGNALS:
     void defaultAlignmentChanged( Qt::Alignment );