diff --git a/src/main/java/envoy/event/GroupResizeEvent.java b/src/main/java/envoy/event/GroupResizeEvent.java
index 5f6791e..c750d7f 100644
--- a/src/main/java/envoy/event/GroupResizeEvent.java
+++ b/src/main/java/envoy/event/GroupResizeEvent.java
@@ -17,7 +17,7 @@ import envoy.data.User;
  * @author Leon Hofmeister
  * @since Envoy Common v0.1-beta
  */
-public class GroupResizeEvent extends Event<Long> {
+public class GroupResizeEvent extends Event<User> {
 
 	private final long				groupID;
 	private final ElementOperation	operation;
@@ -35,7 +35,7 @@ public class GroupResizeEvent extends Event<Long> {
 	 * @since Envoy Common v0.2-alpha
 	 */
 	public GroupResizeEvent(User user, Group group, ElementOperation operation) {
-		super(user.getID());
+		super(user);
 		if (group.getContacts().contains(user)) {
 			if (operation.equals(ElementOperation.ADD)) throw new IllegalStateException(
 					"Cannot add " + user + " to group " + group.getID() + " because he is already a member of this group");