diff --git a/src/tec/letsgoing/ardublock/simulator/view/GUI.java b/src/tec/letsgoing/ardublock/simulator/view/GUI.java
index bc868c3e5140721f13a599ff3f920ae2c3ef965b..bdb727395828ede15b08338ddbab0e43366087d7 100644
--- a/src/tec/letsgoing/ardublock/simulator/view/GUI.java
+++ b/src/tec/letsgoing/ardublock/simulator/view/GUI.java
@@ -44,6 +44,10 @@ import tec.letsgoing.ardublock.simulator.view.modules.RGB;
  *
  */
 public class GUI extends JFrame implements Runnable, ActionListener {
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 1L;
 	private static final int MAXIMUM_MESSAGES = 100;
 	private Vector<String> serialprint = new Vector<String>();
 	private Modul[] modules = new Modul[4];
@@ -66,6 +70,11 @@ public class GUI extends JFrame implements Runnable, ActionListener {
 		Container mainPane = this.getContentPane();
 
 		JPanel modulPanel = new JPanel(new BorderLayout()) {
+			/**
+			 * 
+			 */
+			private static final long serialVersionUID = 1L;
+
 			@Override
 			public void paint(Graphics g) {
 
diff --git a/src/tec/letsgoing/ardublock/simulator/view/modules/ArduinoUno.java b/src/tec/letsgoing/ardublock/simulator/view/modules/ArduinoUno.java
index 84556bff2f3fcf78b758d2a4dcfabc8c0e707360..dfd867c106f4903b90f5b64d5f68beac944639aa 100644
--- a/src/tec/letsgoing/ardublock/simulator/view/modules/ArduinoUno.java
+++ b/src/tec/letsgoing/ardublock/simulator/view/modules/ArduinoUno.java
@@ -43,6 +43,11 @@ public class ArduinoUno extends Modul {
 		layerpane.add(chiplabel, 0);
 
 		JLabel labelPower = new JLabel() {
+			/**
+			 * 
+			 */
+			private static final long serialVersionUID = 1L;
+
 			@Override
 			public void paintComponent(Graphics g) {
 				Graphics2D ga = (Graphics2D) g;
@@ -60,6 +65,11 @@ public class ArduinoUno extends Modul {
 		layerpane.add(labelPower, 0);
 
 		JLabel label13 = new JLabel() {
+			/**
+			 * 
+			 */
+			private static final long serialVersionUID = 1L;
+
 			@Override
 			public void paintComponent(Graphics g) {
 				Graphics2D ga = (Graphics2D) g;
diff --git a/src/tec/letsgoing/ardublock/simulator/view/modules/RGB.java b/src/tec/letsgoing/ardublock/simulator/view/modules/RGB.java
index 2d00b9e36ca159c5438ca124d43b2beeb5694c15..4c6f5a632899f148169bbe4e9defc116f8fe80b0 100644
--- a/src/tec/letsgoing/ardublock/simulator/view/modules/RGB.java
+++ b/src/tec/letsgoing/ardublock/simulator/view/modules/RGB.java
@@ -36,6 +36,11 @@ public class RGB extends Modul {
 		layerpane.add(chiplabel, 1);
 
 		JLabel ledlabel = new JLabel() {
+			/**
+			 * 
+			 */
+			private static final long serialVersionUID = 1L;
+
 			@Override
 			public void paintComponent(Graphics g) {
 				Graphics2D ga = (Graphics2D) g;