diff --git a/ide/idehelpmanager.lfm b/ide/idehelpmanager.lfm
index 324eef6850..da08ea0bb6 100644
--- a/ide/idehelpmanager.lfm
+++ b/ide/idehelpmanager.lfm
@@ -27,6 +27,7 @@ object HelpSelectorDialog: THelpSelectorDialog
       Width = 484
       Align = alClient
       DefaultItemHeight = 18
+      ReadOnly = True
       TabOrder = 0
       OnDblClick = NodesTreeViewDblClick
       OnSelectionChanged = NodesTreeViewSelectionChanged