diff --git a/src/mako/http/Response.php b/src/mako/http/Response.php
index b7795e542..fe246444f 100644
--- a/src/mako/http/Response.php
+++ b/src/mako/http/Response.php
@@ -99,7 +99,7 @@ public function getRequest(): Request
 	/**
 	 * Sets the response body.
 	 */
-	public function setBody(ResponseBuilderInterface|ResponseSenderInterface|string|Stringable $body): Response
+	public function setBody(null|float|int|ResponseBuilderInterface|ResponseSenderInterface|string|Stringable $body): Response
 	{
 		$this->body = $body;