diff --git a/schema/pretext.xml b/schema/pretext.xml
index 5be8f8ee9..d9e9c2dab 100644
--- a/schema/pretext.xml
+++ b/schema/pretext.xml
@@ -3088,7 +3088,7 @@
             PlainTitle =
                 element plaintitle {text}
             Creator =
-                element creator {TextShort}
+                element creator {(TextShort | Xref)*}
             XMLLang = attribute xml:lang {text}
             MetaDataTarget =
                 UniqueID?,