diff --git a/core/src/net/sf/openrocket/rocketcomponent/Configuration.java b/core/src/net/sf/openrocket/rocketcomponent/Configuration.java
index 4cad9533a..e426df1d7 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/Configuration.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/Configuration.java
@@ -189,11 +189,10 @@ public class Configuration implements Cloneable, ChangeSource, ComponentChangeLi
 	 */
 	public void release() {
 		rocket.removeComponentChangeListener(this);
-		listenerList = null;
+		listenerList = new ArrayList<EventListener>();
 		rocket = null;
 	}
 	
-	
 	////////////////  Listeners  ////////////////
 	
 	@Override