diff --git a/src/main/org/insa/graphics/GraphReaderProgressBar.java b/src/main/org/insa/graphics/GraphReaderProgressBar.java
index 8b0c1f4..98f424f 100644
--- a/src/main/org/insa/graphics/GraphReaderProgressBar.java
+++ b/src/main/org/insa/graphics/GraphReaderProgressBar.java
@@ -1,7 +1,6 @@
 package org.insa.graphics;
 
 import java.awt.Component;
-import java.awt.Dimension;
 
 import javax.swing.Box;
 import javax.swing.BoxLayout;
@@ -38,7 +37,7 @@ public class GraphReaderProgressBar extends JDialog implements GraphReaderObserv
     private final JProgressBar[] progressBars = new JProgressBar[3];
 
     // Current element read, and modulo.
-    private int[] counters = new int[]{ 0, 0, 0 };
+    private int[] counters = new int[] { 0, 0, 0 };
     private int[] modulos = new int[3];
 
     public GraphReaderProgressBar(JFrame owner) {
@@ -63,13 +62,8 @@ public class GraphReaderProgressBar extends JDialog implements GraphReaderObserv
         }
 
         pane.add(Box.createVerticalGlue());
-
-        pane.setPreferredSize(new Dimension(300, 120));
-
         setContentPane(pane);
-
         pack();
-
     }
 
     @Override
diff --git a/src/main/org/insa/graphics/MainWindow.java b/src/main/org/insa/graphics/MainWindow.java
index 844840f..04409bf 100644
--- a/src/main/org/insa/graphics/MainWindow.java
+++ b/src/main/org/insa/graphics/MainWindow.java
@@ -157,7 +157,7 @@ public class MainWindow extends JFrame {
         this.currentPalette = this.basicPalette;
 
         wccPanel = new AlgorithmPanel(this, WeaklyConnectedComponentsAlgorithm.class,
-                "Weakly-Connected Components", new String[]{}, false, false);
+                "Weakly-Connected Components", new String[] {}, false, false);
         wccPanel.addStartActionListener(new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent e) {
@@ -202,7 +202,7 @@ public class MainWindow extends JFrame {
         });
 
         spPanel = new AlgorithmPanel(this, ShortestPathAlgorithm.class, "Shortest-Path",
-                new String[]{ "Origin", "Destination" }, true, true);
+                new String[] { "Origin", "Destination" }, true, true);
         spPanel.addStartActionListener(new ActionListener() {
             @Override
             public void actionPerformed(ActionEvent e) {
@@ -255,12 +255,12 @@ public class MainWindow extends JFrame {
         });
 
         cpPanel = new AlgorithmPanel(
-                this, CarPoolingAlgorithm.class, "Car-Pooling", new String[]{ "Origin Car",
+                this, CarPoolingAlgorithm.class, "Car-Pooling", new String[] { "Origin Car",
                         "Origin Pedestrian", "Destination Car", "Destination Pedestrian" },
                 true, true);
 
         psPanel = new AlgorithmPanel(this, PackageSwitchAlgorithm.class, "Car-Pooling",
-                new String[]{ "Oribin A", "Origin B", "Destination A", "Destination B" }, true,
+                new String[] { "Oribin A", "Origin B", "Destination A", "Destination B" }, true,
                 true);
 
         // add algorithm panels
@@ -592,6 +592,10 @@ public class MainWindow extends JFrame {
                     return;
                 }
 
+                // In case of....
+                progressBar.setVisible(false);
+                progressBar = null;
+
                 String info = graph.getMapId();
                 if (graph.getMapName() != null && !graph.getMapName().isEmpty()) {
                     // The \u200e character is the left-to-right mark, we need to avoid issue with