fix

src/ui/view/SimulationMenu.java

@@ -72,8 +72,11 @@ public class SimulationMenu extends JMenuBar {
 		algoCombo.addActionListener(new ActionListener() {
 			@Override
 			public void actionPerformed(ActionEvent e) {
-				if (algoCombo.getSelectedIndex() != 0)
+				if (algoCombo.getSelectedIndex() != 0) {
 					setAlgorithm(algosHash.get(algoCombo.getSelectedItem()), algoCombo.getSelectedItem() + "");
+				}else{
+					setAlgorithm(null, "non Chosen");
+				}
 			}
 		});