diff --git a/src/libs/vlayout/vlayoutpiece.cpp b/src/libs/vlayout/vlayoutpiece.cpp
index f6e72ec56..7b24260cd 100644
--- a/src/libs/vlayout/vlayoutpiece.cpp
+++ b/src/libs/vlayout/vlayoutpiece.cpp
@@ -1182,7 +1182,7 @@ QPainterPath VLayoutPiece::MappedLayoutAllowancePath() const
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-void VLayoutPiece::DrawMiniature(QPainter &painter)
+void VLayoutPiece::DrawMiniature(QPainter &painter) const
 {
     painter.drawPath(ContourPath());
 
diff --git a/src/libs/vlayout/vlayoutpiece.h b/src/libs/vlayout/vlayoutpiece.h
index 96eaaddf3..5012c8392 100644
--- a/src/libs/vlayout/vlayoutpiece.h
+++ b/src/libs/vlayout/vlayoutpiece.h
@@ -154,7 +154,7 @@ public:
     QPainterPath ContourPath() const;
     QPainterPath MappedLayoutAllowancePath() const;
 
-    void DrawMiniature(QPainter &painter);
+    void DrawMiniature(QPainter &painter) const;
 
     Q_REQUIRED_RESULT QGraphicsItem *GetItem(bool textAsPaths) const;