diff --git a/test/org/hibernate/test/manytomany/UserGroup.hbm.xml b/test/org/hibernate/test/manytomany/UserGroup.hbm.xml
index 0e252cccda..a82755044b 100755
--- a/test/org/hibernate/test/manytomany/UserGroup.hbm.xml
+++ b/test/org/hibernate/test/manytomany/UserGroup.hbm.xml
@@ -16,8 +16,8 @@
 	
 	<class name="User" table="`User`">
 		<composite-id>
-			<key-property name="name"/>
-			<key-property name="org"/>
+			<key-property name="name" length="32"/>
+			<key-property name="org" length="32"/>
 		</composite-id>
 		<set name="groups" table="UserGroup">
 			<key>
@@ -33,8 +33,8 @@
 	
 	<class name="Group" table="`Group`">
 		<composite-id>
-			<key-property name="name"/>
-			<key-property name="org"/>
+			<key-property name="name" length="32"/>
+			<key-property name="org" length="32"/>
 		</composite-id>
 		<property name="description"/>
 		<set name="users" table="UserGroup" inverse="true">