Fix brain

src/main/java/ch/hepia/ui/MainWindowController.java

@@ -324,7 +324,7 @@ public class MainWindowController implements Initializable {
      * @param pnl Panel containing the journey information
      */
     private void createJourney(AppContext app, Pane pnl) throws IOException, ParseException {
-        if (currentJourney.equals(new Connection.EmptyConnection())){
+        if (currentJourney instanceof Connection.EmptyConnection){
             Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
             alert.setTitle("Valider le trajet");
             alert.setHeaderText("Valider le trajet");