diff --git a/ejb/plugin/src/main/java/org/jvnet/hyperjaxb3/ejb/strategy/model/base/DefaultGetTypes.java b/ejb/plugin/src/main/java/org/jvnet/hyperjaxb3/ejb/strategy/model/base/DefaultGetTypes.java
index 02e253a1..50e8a6d9 100644
--- a/ejb/plugin/src/main/java/org/jvnet/hyperjaxb3/ejb/strategy/model/base/DefaultGetTypes.java
+++ b/ejb/plugin/src/main/java/org/jvnet/hyperjaxb3/ejb/strategy/model/base/DefaultGetTypes.java
@@ -39,7 +39,7 @@ public Collection<? extends CTypeInfo> ref(C context,
 		if (ID.IDREF.equals(id)) {
 			if (parent instanceof CClassInfo) {
 				final CClassInfo parentClassInfo = (CClassInfo) parent;
-				final String fullName = baseType.fullName();
+				final String fullName = (baseType == null ? null : baseType.fullName());
 				for (CClassInfo possibleClassInfo : parentClassInfo.model
 						.beans().values()) {
 					final String possibleFullName = possibleClassInfo