GameObject not looking at me..

Hi ! I got a problem. Surfed the web a lot to find a solution, But I don't know, i tried so much possibilities and variants, and it still doesn't work :( ! I'm trying to make a gameObject ( a creature ) rotating to look at me and then moving towards me. Here's my code, I really don't understand why the creature doesn't turn to me. Sorry for bag english grammar, I'm french c':

 using UnityEngine;
 using System.Collections;
 
 public class IA : MonoBehaviour {
 
     //Déclaration des variables
     bool joueurVu = false;
     public GameObject joueur;
     float mouvementSpeed = 2.5f;
 
     // Use this for initialization
     void Start () {
         joueur = GameObject.Find ("FPSController");
 
     }
     
     // Update is called once per frame
     void Update () {
         if (getDistance () < 10) {
             joueurVu = true;
             print ("Player seen!");
         }
 
         if (joueurVu) {
             transform.position = Vector3.MoveTowards (transform.position, joueur.transform.position, Time.deltaTime * mouvementSpeed);
             transform.LookAt (joueur.transform.position);
         }
     
     }
 
     //Autres méthodes
     float getDistance(){
         return Vector3.Distance (joueur.transform.position, transform.position);
     }
 
 }