diff -r 2a90d105edec -r dd0a45ae25d7 src/main/java/de/uapcore/lightpit/dao/postgres/PGUserDao.java
--- a/src/main/java/de/uapcore/lightpit/dao/postgres/PGUserDao.java	Sat May 16 11:37:57 2020 +0200
+++ b/src/main/java/de/uapcore/lightpit/dao/postgres/PGUserDao.java	Sat May 16 13:29:44 2020 +0200
@@ -44,10 +44,6 @@
 
 public final class PGUserDao implements UserDao, GenericDao<User> {
 
-    public static final String[] COLUMNS = {
-            "id", "username", "lastname", "givenname", "mail"
-    };
-
     private final PreparedStatement insert, update, list, find;
 
     public PGUserDao(Connection connection) throws SQLException {
@@ -89,7 +85,7 @@
         setStringOrNull(update, 1, instance.getLastname());
         setStringOrNull(update, 2, instance.getGivenname());
         setStringOrNull(update, 3, instance.getMail());
-        update.setInt(4, instance.getUserID());
+        update.setInt(4, instance.getId());
         return update.executeUpdate() > 0;
     }