diff --git a/src/org/kuchelmeister/engine/solarsystem/Main.java b/src/org/kuchelmeister/solarsystem/Main.java
similarity index 85%
rename from src/org/kuchelmeister/engine/solarsystem/Main.java
rename to src/org/kuchelmeister/solarsystem/Main.java
index 14dd526..e159f48 100644
--- a/src/org/kuchelmeister/engine/solarsystem/Main.java
+++ b/src/org/kuchelmeister/solarsystem/Main.java
@@ -1,4 +1,4 @@
-package org.kuchelmeister.engine.solarsystem;
+package org.kuchelmeister.solarsystem;
 
 import org.kuchelmeister.engine.Scene;
 
diff --git a/src/org/kuchelmeister/engine/solarsystem/SolarSystemScene.java b/src/org/kuchelmeister/solarsystem/SolarSystemScene.java
similarity index 97%
rename from src/org/kuchelmeister/engine/solarsystem/SolarSystemScene.java
rename to src/org/kuchelmeister/solarsystem/SolarSystemScene.java
index 057bc27..7b29791 100644
--- a/src/org/kuchelmeister/engine/solarsystem/SolarSystemScene.java
+++ b/src/org/kuchelmeister/solarsystem/SolarSystemScene.java
@@ -1,4 +1,4 @@
-package org.kuchelmeister.engine.solarsystem;
+package org.kuchelmeister.solarsystem;
 
 import org.joml.Vector3f;
 import org.kuchelmeister.engine.Scene;
@@ -10,6 +10,7 @@ import org.kuchelmeister.solarsystem.geometry.Universe;
 import org.kuchelmeister.solarsystem.input.UniverseKeyListener;
 
 public class SolarSystemScene extends Scene {
+    private static final long serialVersionUID = 3875025579198640196L;
 
     public SolarSystemScene(final int width, final int height, final String title) {
         super(width, height, title);