diff --git a/Application/Clavardage/src/controller/Controller.java b/Application/Clavardage/src/controller/Controller.java
index 01b578a..6fdf8ca 100644
--- a/Application/Clavardage/src/controller/Controller.java
+++ b/Application/Clavardage/src/controller/Controller.java
@@ -190,16 +190,18 @@ public class Controller {
 
 	    String tmpPseudo = view.PseudotextField.getText();  // Read user input
 
-	    while(!(this.validatePseudo(tmpPseudo)) || tmpPseudo.equals(oldPseudo)) {
+	    if(!(this.validatePseudo(tmpPseudo)) || tmpPseudo.equals(oldPseudo)) {
 	        view.Pseudolabel.setText("Already exists, enter another nickname. Your current username is: " + oldPseudo);  // Read user input
 	        tmpPseudo = view.PseudotextField.getText();  // Read user input
 	    }
+	    else {
+		    this.myUser.setPseudo(tmpPseudo);
+		    JOptionPane.showMessageDialog(null ,"Your new nickname : " + tmpPseudo + " is valid !");
+		    this.notify_remote_users();
 
-	    this.myUser.setPseudo(tmpPseudo);
+	    }
 
-	    JOptionPane.showMessageDialog(null ,"Your new nickname : " + tmpPseudo + " is valid !");
 
-	    this.notify_remote_users();
 	}
 	/**
 	 * <p>
@@ -380,11 +382,12 @@ public class Controller {
 	}
 	
 	public void askCloseSession() {
+		closeSession(this.activeChat);
 		this.activeChat = null;
 	}
 	public void closeSession(Chat c) {
 		sendMessage(new Msg_Text(myUser.getAddIP(),"end"), c); // tell rm session STOP
-		JOptionPane.showMessageDialog(null ,"Close session with "+c.getRemoteUser().getPseudo()+" loading history"); 
+		JOptionPane.showMessageDialog(null ,"Close session with "+c.getRemoteUser().getPseudo()); 
 		this.myUser.closeChat(c);
 	}