diff --git a/core/src/main/java/info/openrocket/core/document/Simulation.java b/core/src/main/java/info/openrocket/core/document/Simulation.java
index 3ec5ae0f3..3becacabe 100644
--- a/core/src/main/java/info/openrocket/core/document/Simulation.java
+++ b/core/src/main/java/info/openrocket/core/document/Simulation.java
@@ -419,14 +419,15 @@ public class Simulation implements ChangeSource, Cloneable {
 
 			SimulationConditions simulationConditions = options.toSimulationConditions();
 			simulationConditions.setSimulation(this);
-			for (SimulationListener l : additionalListeners) {
-				simulationConditions.getSimulationListenerList().add(l);
-			}
 			
 			for (SimulationExtension extension : simulationExtensions) {
 				extension.initialize(simulationConditions);
 			}
 			
+			for (SimulationListener l : additionalListeners) {
+				simulationConditions.getSimulationListenerList().add(l);
+			}
+			
 			long t1, t2;
 			log.debug("Simulation: calling simulator");
 			t1 = System.currentTimeMillis();