diff --git a/include/itkPolyData.h b/include/itkPolyData.h
index 9198507..839e11a 100644
--- a/include/itkPolyData.h
+++ b/include/itkPolyData.h
@@ -77,7 +77,7 @@ class ITK_TEMPLATE_EXPORT PolyData: public DataObject
   PointsContainer * GetPoints();
   const PointsContainer * GetPoints() const;
 
-  /** Lines in format [1 pointIndex1 1 pointIndex2 1 pointIndex3 ... ] */
+  /** Vertices in format [1 pointIndex1 1 pointIndex2 1 pointIndex3 ... ] */
   void SetVertices(CellsContainer *);
   CellsContainer * GetVertices();
   const CellsContainer* GetVertices() const;