From cc3bd48ddf948cdc7655e8c5267476079371635d Mon Sep 17 00:00:00 2001
From: klemek <klemek.dev@proton.me>
Date: Wed, 3 Jun 2026 00:00:48 +0200
Subject: [PATCH] fix(cert_manager): typo in valid_host

---
 stapler/cert_manager.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stapler/cert_manager.py b/stapler/cert_manager.py
index fc23bb4..e0513a6 100644
--- a/stapler/cert_manager.py
+++ b/stapler/cert_manager.py
@@ -192,7 +192,7 @@ class CertManager:
         _: ssl.SSLSocket,
         /,
     ) -> None | int:
-        if host is None or is_valid_host(host):
+        if host is None or not valid_host(host):
             return None
         self.logger.debug("servername callback: %s", host)
         if not self.exists(host) and not self.create_or_update(host):