diff --git a/Database/Command.php b/Database/Command.php
index 34925549..8e5e3712 100644
--- a/Database/Command.php
+++ b/Database/Command.php
@@ -152,9 +152,7 @@ class Command extends Component
 		if (!($query = $connect?->query($this->sql))) {
 			return $this->addError($connect->errorInfo()[2] ?? '数据库异常, 请稍后再试.');
 		}
-		Coroutine::defer(function () use ($query) {
-			$query->closeCursor();
-		});
+		defer(fn() => $query->closeCursor());
 		if ($type === static::FETCH_COLUMN) {
 			return $query->fetchAll(PDO::FETCH_ASSOC);
 		} else if ($type === static::ROW_COUNT) {