1 files changed, 5 insertions, 0 deletions
diff --git a/src/main/java/org/zwobble/mammoth/Mammoth.java b/src/main/java/org/zwobble/mammoth/Mammoth.java
index a1bf0d0..9564a6f 100644
--- a/src/main/java/org/zwobble/mammoth/Mammoth.java
+++ b/src/main/java/org/zwobble/mammoth/Mammoth.java
@@ -99,6 +99,11 @@ public class Mammoth {
             public String visit(Bookmark bookmark) {
                 throw new UnsupportedOperationException();
             }
+
+            @Override
+            public String visit(NoteReference noteReference) {
+                throw new UnsupportedOperationException();
+            }
         });
     }
 }