diff --git a/app/inc/constants.php.template b/app/inc/constants.php.template
index d8faf3475fbeecd06b99bcab05ac44d8912f261d..114203be307a5a3b509347068bd771bd1239ae81 100644
--- a/app/inc/constants.php.template
+++ b/app/inc/constants.php.template
@@ -58,7 +58,7 @@ $ALLOWED_LANGUAGES = [
 // Regex
 const POLL_REGEX = '/^[a-z0-9]+$/';
 const CHOICE_REGEX = '/^[012]$/';
-const NAME_REGEX = '/^[ a-z0-9_ -]+$/i';
+const NAME_REGEX = '/(*UTF8)^[[:alnum:]_ -]+$/i';
 
 // Path to logo
 const LOGOBANDEAU = '<relative path to the logo file>';