diff --git a/hsarback/src/de/hsadmin/mods/pac/PacModuleImpl.java b/hsarback/src/de/hsadmin/mods/pac/PacModuleImpl.java
index 7177a4d..0eea9ea 100644
--- a/hsarback/src/de/hsadmin/mods/pac/PacModuleImpl.java
+++ b/hsarback/src/de/hsadmin/mods/pac/PacModuleImpl.java
@@ -10,6 +10,7 @@ import javax.persistence.Query;
 
 import de.hsadmin.core.model.AbstractEntity;
 import de.hsadmin.core.model.AbstractModuleImpl;
+import de.hsadmin.core.model.AuthorisationException;
 import de.hsadmin.core.model.HSAdminException;
 import de.hsadmin.core.util.TextUtil;
 import de.hsadmin.mods.cust.Contact;
@@ -97,5 +98,11 @@ public class PacModuleImpl extends AbstractModuleImpl {
 		admin.setUserId(nUID);
 		return super.add(newEntity);
 	}
+
+	@Override
+	public AbstractEntity update(AbstractEntity existingEntity)
+			throws HSAdminException {
+		throw new AuthorisationException(getLoginUser(), "update", existingEntity);
+	}
 	
 }