diff --git a/src/Operation/Reject.php b/src/Operation/Reject.php
index 11c4fa49..bb068879 100644
--- a/src/Operation/Reject.php
+++ b/src/Operation/Reject.php
@@ -53,7 +53,7 @@ static function (iterable $iterable) use ($callbacks): Generator {
                          * @param TKey $key
                          * @param iterable<TKey, T> $iterable
                          */
-                        static fn (mixed $current, mixed $key, mixed $iterable): bool => !(bool)$callback($current, $key, $iterable);
+                        static fn (mixed $current, mixed $key, mixed $iterable): bool => !(bool) $callback($current, $key, $iterable);
 
                     yield from new FilterIterableAggregate($iterable, $callback);
                 };