diff --git a/src/lsystem/screen/main/Listener.java b/src/lsystem/screen/main/Listener.java
index 06e1975..275038d 100644
--- a/src/lsystem/screen/main/Listener.java
+++ b/src/lsystem/screen/main/Listener.java
@@ -7,13 +7,10 @@ import lsystem.utils.Pair;
 
 import javax.swing.*;
 import java.awt.*;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.awt.event.KeyEvent;
-import java.awt.event.KeyListener;
+import java.awt.event.*;
 import java.util.List;
 
-public class Listener implements ActionListener, KeyListener {
+public class Listener implements ActionListener, KeyListener, MouseWheelListener {
     Tab tab;
     MainFrame frame;
     Integer index;
@@ -36,7 +33,7 @@ public class Listener implements ActionListener, KeyListener {
             case "Close":
                 frame.getTab().removeTabAt(index-1);
                 frame.decreaseTab();
-                for(int i = 0; i <frame.getTab().getComponentCount(); i++){
+                for(int i = 0; i < frame.getTab().getComponentCount(); i++){
                     frame.getTab().setTitleAt(i,"Génération"+(i+1));
                 }
 
@@ -145,4 +142,12 @@ public class Listener implements ActionListener, KeyListener {
     public void resetNbAxioms(){
         nbAxioms = 0;
     }
+
+    @Override
+    public void mouseWheelMoved(MouseWheelEvent e) {
+        if(e.getWheelRotation() < 0)
+            tab.itSpinner.setValue(tab.itSpinner.getNextValue());
+        else
+            tab.itSpinner.setValue(tab.itSpinner.getPreviousValue());
+    }
 }
diff --git a/src/lsystem/screen/main/Tab.java b/src/lsystem/screen/main/Tab.java
index 1628c34..9f4c28d 100644
--- a/src/lsystem/screen/main/Tab.java
+++ b/src/lsystem/screen/main/Tab.java
@@ -8,7 +8,7 @@ public class Tab extends JPanel{
 
     int nbTabs;
     int nbRules;
-    JSpinner nbIterations,itSpinner;
+    public JSpinner itSpinner;
     JTextField axiomeField,rulesField;
     JTextArea axiomList,rulesList;;
     JButton submitButton, close;
@@ -22,12 +22,10 @@ public class Tab extends JPanel{
         axiomList = textArea("Axiome : \n",nbTabs);
         rulesList = textArea("Règles : \n",nbTabs+10);
 
-        nbIterations = new JSpinner();
-        nbIterations.setModel(new SpinnerNumberModel(1, 1, 15, 1));
-
         JLabel itLabel  = new JLabel("Nombre d'itérations : ");
         itSpinner = new JSpinner(new SpinnerNumberModel(1, 1, 30, 1));
         ((JSpinner.DefaultEditor) itSpinner.getEditor()).getTextField().setEditable(false);
+        itSpinner.addMouseWheelListener(new Listener(null,null,"Spinner",this));
 
         JLabel axiome = new JLabel("Axiome :");
         JLabel rules = new JLabel("Règle "+ nbRules+" :");