diff --git a/03/src/hibernate.cfg.xml b/03/src/hibernate.cfg.xml
index 4237a06..e61ede3 100644
--- a/03/src/hibernate.cfg.xml
+++ b/03/src/hibernate.cfg.xml
@@ -17,6 +17,7 @@
 
 		<property name="hbm2ddl.auto">validate</property>
 
+		<mapping resource="de/dis2013/data/mapping/Contract.hbm.xml" />
 		<mapping resource="de/dis2013/data/mapping/Person.hbm.xml" />
 		<mapping resource="de/dis2013/data/mapping/Makler.hbm.xml" />
 		<mapping resource="de/dis2013/data/mapping/Immobilie.hbm.xml" />