diff --git a/hsarback/src/de/hsadmin/mods/pac/Pac.java b/hsarback/src/de/hsadmin/mods/pac/Pac.java
index 3ed0f14..dae7716 100644
--- a/hsarback/src/de/hsadmin/mods/pac/Pac.java
+++ b/hsarback/src/de/hsadmin/mods/pac/Pac.java
@@ -89,7 +89,6 @@ public class Pac extends AbstractEntity implements Serializable {
 	private Set<PacComponent> pacComponents;
 
 	@OneToMany(fetch = LAZY, cascade = ALL, mappedBy="pac")
-	@AnnFieldIO(rw=ReadWriteAccess.WRITEONCE,validation="[a-z0-9\\-\\.\\_]*")
 	private Set<UnixUser> unixUser;
 
 	public void initPacComponents(EntityManager em, BasePac aBasepac, boolean setDefaults) {