diff --git a/examples/matroskachapters.dtd b/examples/matroskachapters.dtd
index e3ac8935f..63a16b953 100644
--- a/examples/matroskachapters.dtd
+++ b/examples/matroskachapters.dtd
@@ -21,7 +21,7 @@
           ChapterTrack?,
           ChapterFlagHidden?,
           ChapterFlagEnabled?,
-          ChapterDisplay+,
+          ChapterDisplay*,
           ChapterProcess*,
           ChapterAtom*)>