diff --git a/include/svx/svdmodel.hxx b/include/svx/svdmodel.hxx
index 71c0e3ef7831..4cad2a4cf17b 100644
--- a/include/svx/svdmodel.hxx
+++ b/include/svx/svdmodel.hxx
@@ -103,7 +103,6 @@ namespace o3tl
 
 enum class SdrHintKind
 {
-    Unknown,              // Unknown
     LayerChange,          // changed layer definition
     LayerOrderChange,     // order of layer changed (Insert/Remove/ChangePos)
     PageOrderChange,      // order of pages (object pages or master pages) changed (Insert/Remove/ChangePos)