diff --git a/scripts/upgrade b/scripts/upgrade
index c69be08..f066255 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -121,9 +121,9 @@ then
   ynh_replace_string --match_string="//const WWW_URI = '/asso/';" --replace_string="const WWW_URI = '$path_url/';" --target_file="$final_path/config.local.php"
   fi
   chmod 755 $final_path
-  
+
   # Create the visitors permission if needed
-  visitors_enabled=$(ynh_permission_has_user "main" "visitors")
+   visitors_enabled=$(ynh_permission_has_user "main" "visitors" && echo 0 || echo 1)
   if [[ $visitors_enabled -eq 0 ]]; then
     ynh_permission_update --permission "main" --add "visitors"
   fi