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()));
diff --git a/core/test/net/sf/openrocket/simulation/SimulationConditionsTest.java b/core/test/net/sf/openrocket/simulation/SimulationConditionsTest.java
new file mode 100644
index 000000000..78c60539d
--- /dev/null
+++ b/core/test/net/sf/openrocket/simulation/SimulationConditionsTest.java
@@ -0,0 +1,79 @@
+package net.sf.openrocket.simulation;
+
+import com.google.inject.AbstractModule;
+import com.google.inject.Guice;
+import com.google.inject.Injector;
+import com.google.inject.Module;
+import com.google.inject.util.Modules;
+import net.sf.openrocket.ServicesForTesting;
+import net.sf.openrocket.formatting.RocketDescriptor;
+import net.sf.openrocket.formatting.RocketDescriptorImpl;
+import net.sf.openrocket.l10n.DebugTranslator;
+import net.sf.openrocket.l10n.Translator;
+import net.sf.openrocket.plugin.PluginModule;
+import net.sf.openrocket.startup.Application;
+import net.sf.openrocket.startup.MockPreferences;
+import net.sf.openrocket.startup.Preferences;
+import net.sf.openrocket.util.MathUtil;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+public class SimulationConditionsTest {
+    private final static double EPSILON = MathUtil.EPSILON;
+
+    @BeforeClass
+    public static void setUp() throws Exception {
+        Module applicationModule = new PreferencesModule();
+        Module debugTranslator = new AbstractModule() {
+
+            @Override
+            protected void configure() {
+                bind(Translator.class).toInstance(new DebugTranslator(null));
+            }
+
+        };
+        Module pluginModule = new PluginModule();
+        Injector injector = Guice.createInjector(Modules.override(applicationModule).with(debugTranslator), pluginModule);
+        Application.setInjector(injector);
+    }
+
+    @Test
+    public void testDefaultSimulationOptionFactory() {
+        Application.getInjector().injectMembers(this);
+        DefaultSimulationOptionFactory factory = Application.getInjector().getInstance(DefaultSimulationOptionFactory.class);
+        SimulationOptions options = factory.getDefault();
+        assertNotNull(options);
+
+        assertEquals(28.61, options.getLaunchLatitude(), EPSILON);
+        assertEquals(0.0, options.getLaunchAltitude(), EPSILON);
+        assertEquals(-80.60, options.getLaunchLongitude(), EPSILON);
+        assertTrue(options.isISAAtmosphere());
+        assertEquals(288.15, options.getLaunchTemperature(), EPSILON);
+        assertEquals(101325, options.getLaunchPressure(), EPSILON);
+        assertEquals(1.0, options.getLaunchRodLength(), EPSILON);
+        assertEquals(Math.PI / 2, options.getLaunchRodDirection(), EPSILON);
+        assertEquals(0.0, options.getLaunchRodAngle(), EPSILON);
+        assertTrue(options.getLaunchIntoWind());
+        assertEquals(Math.PI / 2, options.getWindDirection(), EPSILON);
+        assertEquals(0.1, options.getWindTurbulenceIntensity(), EPSILON);
+        assertEquals(2.0, options.getWindSpeedAverage(), EPSILON);
+        assertEquals(0.2, options.getWindSpeedDeviation(), EPSILON);
+
+        assertEquals(0.05, options.getTimeStep(), EPSILON);
+        assertEquals(3 * Math.PI / 180, options.getMaximumStepAngle(), EPSILON);
+
+    }
+
+    private static class PreferencesModule extends AbstractModule {
+        @Override
+        protected void configure() {
+            bind(Preferences.class).to(MockPreferences.class);
+            bind(Translator.class).toProvider(ServicesForTesting.TranslatorProviderForTesting.class);
+            bind(RocketDescriptor.class).to(RocketDescriptorImpl.class);
+        }
+    }
+}
diff --git a/core/test/net/sf/openrocket/startup/MockPreferences.java b/core/test/net/sf/openrocket/startup/MockPreferences.java
index eabfe18d9..8b9bb6685 100644
--- a/core/test/net/sf/openrocket/startup/MockPreferences.java
+++ b/core/test/net/sf/openrocket/startup/MockPreferences.java
@@ -3,11 +3,13 @@ package net.sf.openrocket.startup;
 import java.util.Set;
 import java.util.prefs.BackingStoreException;
 
+import com.google.inject.Singleton;
 import net.sf.openrocket.material.Material;
 import net.sf.openrocket.preset.ComponentPreset;
 import net.sf.openrocket.preset.ComponentPreset.Type;
 import net.sf.openrocket.util.BugException;
 
+@Singleton
 public class MockPreferences extends Preferences {
 	
 	private final String NODENAME = "OpenRocket-test-mock";