diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index 50b1d1f52d..155707a97f 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -281,11 +281,9 @@ p a {
 		<li>[Fix] Cached stylesheet now supporting gzip compression</li>
 		<li>[Fix] Added link to inbox for deleted PMs (Bug #13813)</li>
 		<li>[Fix] Re-syncing the board stats also refreshes the newest user (Bug #13831)</li>
-
-
-
 		<li>[Feature] Ability to externally set $phpbb_root_path if wrapping phpBB3 by defining constant PHPBB_ROOT_PATH</li>
 		<li>[Fix] Implemented correct left/right floating within ACP in regard to RTL languages (Bug #13777)</li>
+		<li>[Fix] Fixing session problems when using MySQL strict mode in conjunction with very long browser agent string (Bug #13827)</li>
 
 	</ul>
 
diff --git a/phpBB/includes/session.php b/phpBB/includes/session.php
index c9e12b77e2..a100723972 100644
--- a/phpBB/includes/session.php
+++ b/phpBB/includes/session.php
@@ -567,7 +567,7 @@ class session
 			'session_start'			=> (int) $this->time_now,
 			'session_last_visit'	=> (int) $this->data['session_last_visit'],
 			'session_time'			=> (int) $this->time_now,
-			'session_browser'		=> (string) $this->browser,
+			'session_browser'		=> (string) substr($this->browser, 0, 149),
 			'session_forwarded_for'	=> (string) $this->forwarded_for,
 			'session_ip'			=> (string) $this->ip,
 			'session_autologin'		=> ($session_autologin) ? 1 : 0,