diff --git a/src/ServerResponse.php b/src/ServerResponse.php
index 2316037e285e62436a51ab4163da1db8a052daa7..5982fbc7ae4b4e1ab5103fb90b3376da70dfa3da 100644
--- a/src/ServerResponse.php
+++ b/src/ServerResponse.php
@@ -98,7 +98,7 @@ class ServerResponse extends Response implements ServerResponseInterface
 
     public function deleteCookie($name)
     {
-        $this->setCookie($name, 'deleted', 1);
+        $this->setCookie($name, 'deleted', -1);
         return $this;
     }
 }