diff --git a/src/SMESHGUI/SMESHGUI_MakeNodeAtPointDlg.cxx b/src/SMESHGUI/SMESHGUI_MakeNodeAtPointDlg.cxx
index 22cbb7293..c31fc078a 100644
--- a/src/SMESHGUI/SMESHGUI_MakeNodeAtPointDlg.cxx
+++ b/src/SMESHGUI/SMESHGUI_MakeNodeAtPointDlg.cxx
@@ -260,6 +260,7 @@ SMESHGUI_MakeNodeAtPointOp::SMESHGUI_MakeNodeAtPointOp()
   mySimulation = 0;
   myDlg = new SMESHGUI_MakeNodeAtPointDlg;
   myFilter = 0;
+  myHelpFileName = "mesh_through_point_page.html";
 
   // connect signals and slots
   connect(myDlg->myX, SIGNAL (valueChanged(double)), this, SLOT(redisplayPreview()));