diff --git a/config/config.php b/config/config.php
index 4fe5c5b..0971b05 100644
--- a/config/config.php
+++ b/config/config.php
@@ -28,11 +28,13 @@ $_ENV['APP_URL'] = APP_URL;
  *   url('ressources/user/login.php')
  *   url('api/items', ['page'=>2])
  */
-function url(string $path = '', array $qs = []): string
-{
-    $u = APP_URL . ltrim($path, '/');
-    if ($qs) {
-        $u .= (str_contains($u, '?') ? '&' : '?') . http_build_query($qs);
+if (!function_exists('url')) {
+    function url(string $path = '', array $qs = []): string
+    {
+        $u = APP_URL . ltrim($path, '/');
+        if ($qs) {
+            $u .= (str_contains($u, '?') ? '&' : '?') . http_build_query($qs);
+        }
+        return $u;
     }
-    return $u;
 }