diff --git a/sw/inc/swabstdlg.hxx b/sw/inc/swabstdlg.hxx
index 6c45c7aa4513..cd6d4b3593dd 100644
--- a/sw/inc/swabstdlg.hxx
+++ b/sw/inc/swabstdlg.hxx
@@ -323,6 +323,11 @@ public:
     virtual std::shared_ptr<SfxDialogController> GetController() = 0;
 };
 
+/**
+ * Interface for e.g. the insert -> bookmark -> rename dialog. It's implemented by
+ * AbstractSwRenameXNamedDlg_Impl, but SwInsertBookmarkDlg only knows about this interface and the
+ * SwAbstractDialogFactory::CreateSwRenameXNamedDlg() factory.
+ */
 class AbstractSwRenameXNamedDlg : public VclAbstractDialog
 {
 protected: