diff --git a/core/src/net/sf/openrocket/simulation/DefaultSimulationOptionFactory.java b/core/src/net/sf/openrocket/simulation/DefaultSimulationOptionFactory.java
index c68cff0c2..31f2451d9 100644
--- a/core/src/net/sf/openrocket/simulation/DefaultSimulationOptionFactory.java
+++ b/core/src/net/sf/openrocket/simulation/DefaultSimulationOptionFactory.java
@@ -46,7 +46,7 @@ public class DefaultSimulationOptionFactory {
 			
 			defaults.setISAAtmosphere(prefs.getBoolean(SIMCONDITION_ATMOS_STD, defaults.isISAAtmosphere()));
 			defaults.setLaunchTemperature(prefs.getDouble(SIMCONDITION_ATMOS_TEMP, defaults.getLaunchTemperature()));
-			defaults.setLaunchPressure(prefs.getDouble(SIMCONDITION_ATMOS_PRESSURE, defaults.getLaunchTemperature()));
+			defaults.setLaunchPressure(prefs.getDouble(SIMCONDITION_ATMOS_PRESSURE, defaults.getLaunchPressure()));
 			
 			defaults.setLaunchIntoWind(prefs.getBoolean(SIMCONDITION_ROD_INTO_WIND, defaults.getLaunchIntoWind()));
 			defaults.setLaunchRodLength(prefs.getDouble(SIMCONDITION_ROD_LENGTH, defaults.getLaunchRodLength()));