diff --git a/src/SMDS/SMDS_BallElement.cxx b/src/SMDS/SMDS_BallElement.cxx
index f73b4ec76..86dc634c7 100644
--- a/src/SMDS/SMDS_BallElement.cxx
+++ b/src/SMDS/SMDS_BallElement.cxx
@@ -29,7 +29,7 @@
 
 void SMDS_BallElement::init(const SMDS_MeshNode * node, double diameter )
 {
-  int nodeVtkID = node->GetVtkID();
+  vtkIdType nodeVtkID = node->GetVtkID();
   int vtkID = getGrid()->InsertNextLinkedCell( toVtkType( SMDSEntity_Ball ), 1, &nodeVtkID );
   setVtkID( vtkID );
   getGrid()->SetBallDiameter( GetVtkID(), diameter );