diff --git a/structure/kn_TreeNoteMng.pas b/structure/kn_TreeNoteMng.pas
index a13f7e8..b4ad3a0 100644
--- a/structure/kn_TreeNoteMng.pas
+++ b/structure/kn_TreeNoteMng.pas
@@ -415,7 +415,8 @@ procedure TreeNodeSelected( Node : TTreeNTNode; OnDeletingNode: boolean= false )
       myTreeNote := TTreeNote( ActiveNote );
       KeepModified:= false;
 
-      myTreeNote.SelectedNode.ScrollPosInEditor:= ActiveNote.Editor.GetScrollPosInEditor;
+      if assigned(myTreeNote.SelectedNode) then
+         myTreeNote.SelectedNode.ScrollPosInEditor:= ActiveNote.Editor.GetScrollPosInEditor;
 
       if ( not _Executing_History_Jump ) and (not _Executing_JumpToKNTLocation_ToOtherNote) then begin
           AddHistoryLocation( myTreeNote, false);        // Add to history the location of current node, before the new node comes to be the selected node