3 files changed, 3 insertions, 3 deletions
diff --git a/src/jrummikub/util/Event1.java b/src/jrummikub/util/Event1.java
index 5e3391c..f93d519 100644
--- a/src/jrummikub/util/Event1.java
+++ b/src/jrummikub/util/Event1.java
@@ -35,7 +35,7 @@ public class Event1<T> implements IEvent1<T> {
 	 *          the event parameter
 	 */
 	public void emit(T value) {
-		for (IListener1<T> listener : listeners) {
+		for (IListener1<T> listener : new HashSet<IListener1<T>>(listeners)) {
 			listener.handle(value);
 		}
 	}
diff --git a/src/jrummikub/util/Event2.java b/src/jrummikub/util/Event2.java
index 9bcee43..139f19f 100644
--- a/src/jrummikub/util/Event2.java
+++ b/src/jrummikub/util/Event2.java
@@ -39,7 +39,7 @@ public class Event2<T1, T2> implements IEvent2<T1, T2> {
 	 *          the second event parameter
 	 */
 	public void emit(T1 value1, T2 value2) {
-		for (IListener2<T1, T2> listener : listeners) {
+		for (IListener2<T1, T2> listener : new HashSet<IListener2<T1, T2>>(listeners)) {
 			listener.handle(value1, value2);
 		}
 	}
diff --git a/src/jrummikub/util/Event3.java b/src/jrummikub/util/Event3.java
index 38cdd07..9510e48 100644
--- a/src/jrummikub/util/Event3.java
+++ b/src/jrummikub/util/Event3.java
@@ -43,7 +43,7 @@ public class Event3<T1, T2, T3> implements IEvent3<T1, T2, T3> {
 	 *            the third event parameter
 	 */
 	public void emit(T1 value1, T2 value2, T3 value3) {
-		for (IListener3<T1, T2, T3> listener : listeners) {
+		for (IListener3<T1, T2, T3> listener : new HashSet<IListener3<T1, T2, T3>>(listeners)) {
 			listener.handle(value1, value2, value3);
 		}
 	}