diff --git a/src/UnitOfWork.php b/src/UnitOfWork.php
index 9ecb3bfa85..e6fb891798 100644
--- a/src/UnitOfWork.php
+++ b/src/UnitOfWork.php
@@ -1568,10 +1568,6 @@ final public static function getIdHashByIdentifier(array $identifier): string
             ' ',
             array_map(
                 static function ($value) {
-                    if ($value instanceof BackedEnum) {
-                        return $value->value;
-                    }
-
                     if (! is_scalar($value) && ! ($value instanceof Stringable)) {
                         throw new UnexpectedValueException(sprintf(
                             'Unexpected identifier value: Expecting scalar or Stringable, got %s.',