diff --git a/phpBB/language/en/acp/board.php b/phpBB/language/en/acp/board.php
index cb9013805d..a01a4f1bd1 100644
--- a/phpBB/language/en/acp/board.php
+++ b/phpBB/language/en/acp/board.php
@@ -592,7 +592,7 @@ $lang = array_merge($lang, array(
 	'SMTP_PORT'						=> 'SMTP server port',
 	'SMTP_PORT_EXPLAIN'				=> 'Only change this if you know your SMTP server is on a different port.',
 	'SMTP_SERVER'					=> 'SMTP server address',
-	'SMTP_SERVER_EXPLAIN'			=> 'Do not provide a protocol (<samp>ssl://</samp> or <samp>tsl://</samp>) unless your mail host tells you to do so.',
+	'SMTP_SERVER_EXPLAIN'			=> 'Do not provide a protocol (<samp>ssl://</samp> or <samp>tls://</samp>) unless your mail host tells you to do so.',
 	'SMTP_SETTINGS'					=> 'SMTP settings',
 	'SMTP_USERNAME'					=> 'SMTP username',
 	'SMTP_USERNAME_EXPLAIN'			=> 'Only enter a username if your SMTP server requires it.',