diff --git a/auth.cpp b/auth.cpp
index 797274e..632182c 100644
--- a/auth.cpp
+++ b/auth.cpp
@@ -1,13 +1,8 @@
 #include "auth.h"
-
-extern User users[];
-extern int nbUsers;
-
-int authentifier(std::string login, std::string password) {
-    for(int i = 0; i < nbUsers; i++) {
-        if(users[i].login == login && users[i].password == password) {
+int authentifier(const std::string& login, const std::string& password, const std::vector<User>& users){
+    for(int i=0;i<users.size();i++){
+        if(users[i].login == login && users[i].password == password)
             return i;
-        }
     }
     return -1;
 }
\ No newline at end of file