diff --git a/CHANGELOG.md b/CHANGELOG.md
index 26d11751..5f4b497f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [4.4.17] - 2025-05-13
+### Fixed
+- Adapters hostname detection [#556].
+
 ## [4.4.16] - 2025-05-09
 ### Fixed
 - Adapters hostname detection [#555].
@@ -259,7 +263,9 @@ Full library refactoring.
 [#551]: https://github.com/oscarotero/Embed/issues/551
 [#553]: https://github.com/oscarotero/Embed/issues/553
 [#555]: https://github.com/oscarotero/Embed/issues/555
+[#556]: https://github.com/oscarotero/Embed/issues/556
 
+[4.4.17]: https://github.com/oscarotero/Embed/compare/v4.4.16...v4.4.17
 [4.4.16]: https://github.com/oscarotero/Embed/compare/v4.4.15...v4.4.16
 [4.4.15]: https://github.com/oscarotero/Embed/compare/v4.4.14...v4.4.15
 [4.4.14]: https://github.com/oscarotero/Embed/compare/v4.4.13...v4.4.14
diff --git a/src/ExtractorFactory.php b/src/ExtractorFactory.php
index 9ba37e0b..4b5f1e0e 100644
--- a/src/ExtractorFactory.php
+++ b/src/ExtractorFactory.php
@@ -53,7 +53,7 @@ public function createExtractor(UriInterface $uri, RequestInterface $request, Re
             }
 
             // Check if $host is a subdomain of $adapterHost.
-            if (substr($host, -strlen($adapterHost) + 1) === ".{$adapterHost}") {
+            if (substr($host, -strlen($adapterHost) - 1) === ".{$adapterHost}") {
                 $class = $adapter;
                 break;
             }