diff --git a/snappymail/v/0.0.0/app/libraries/RainLoop/Actions/Admin.php b/snappymail/v/0.0.0/app/libraries/RainLoop/Actions/Admin.php
index 4a941cbce..538d80764 100644
--- a/snappymail/v/0.0.0/app/libraries/RainLoop/Actions/Admin.php
+++ b/snappymail/v/0.0.0/app/libraries/RainLoop/Actions/Admin.php
@@ -690,7 +690,7 @@ trait Admin
 				'loaded' => true
 			]
 		];
-		foreach (['APCu', 'cURL','GnuPG','GD','Gmagick','Imagick','intl','LDAP','OpenSSL','pdo_mysql','pdo_pgsql','pdo_sqlite','redis','Sodium','uuid','XXTEA','Zip'] as $name) {
+		foreach (['APCu', 'cURL','GnuPG','GD','Gmagick','Imagick','intl','LDAP','OpenSSL','pdo_mysql','pdo_pgsql','pdo_sqlite','redis','Sodium','Tidy','uuid','XXTEA','Zip'] as $name) {
 			$aResult[] = [
 				'name' => $name,
 				'loaded' => \extension_loaded(\strtolower($name))
diff --git a/snappymail/v/0.0.0/setup.php b/snappymail/v/0.0.0/setup.php
index c1a99f164..7cdd8fe2e 100644
--- a/snappymail/v/0.0.0/setup.php
+++ b/snappymail/v/0.0.0/setup.php
@@ -25,6 +25,7 @@ if (defined('APP_VERSION'))
 		'redis' => extension_loaded('redis'),
 		'Sodium' => extension_loaded('sodium'),
 		'sqlite' => extension_loaded('pdo_sqlite'),
+		'tidy' => extension_loaded('tidy'),
 		'uuid' => extension_loaded('uuid'),
 		'xxtea' => extension_loaded('xxtea'),
 		'zip' => extension_loaded('zip')