diff --git a/schema/pretext.xml b/schema/pretext.xml
index ee817fdb4..2e51a2a47 100644
--- a/schema/pretext.xml
+++ b/schema/pretext.xml
@@ -3182,7 +3182,7 @@
             PlainTitle =
                 element plaintitle {Component?, text}
             Creator =
-                element creator {Component?, TextShort}
+                element creator {Component?, (TextShort | Xref)*}
             XMLLang = attribute xml:lang {text}
             MetaDataTarget =
                 UniqueID?,