diff --git a/phpBB/language/en/acp/board.php b/phpBB/language/en/acp/board.php
index 5e4961c435..7dd83e83db 100644
--- a/phpBB/language/en/acp/board.php
+++ b/phpBB/language/en/acp/board.php
@@ -111,9 +111,9 @@ $lang = array_merge($lang, array(
 	'ALLOW_REMOTE_UPLOAD_EXPLAIN'	=> 'Allow uploading of avatars from another website.',
 	'ALLOW_UPLOAD'					=> 'Enable avatar uploading',
 	'AVATAR_GALLERY_PATH'			=> 'Avatar gallery path',
-	'AVATAR_GALLERY_PATH_EXPLAIN'	=> 'Path under your phpBB root directory for pre-loaded images, e.g. <samp>images/avatars/gallery</samp>.',
+	'AVATAR_GALLERY_PATH_EXPLAIN'	=> 'Path under your phpBB root directory for pre-loaded images, e.g. <samp>images/avatars/gallery</samp>.<br />Double dots like <samp>../</samp> will be stripped from the path for security reasons.',
 	'AVATAR_STORAGE_PATH'			=> 'Avatar storage path',
-	'AVATAR_STORAGE_PATH_EXPLAIN'	=> 'Path under your phpBB root directory, e.g. <samp>images/avatars/upload</samp>.<br />Avatar uploading <strong>will not be available</strong> if this path is not writable.',
+	'AVATAR_STORAGE_PATH_EXPLAIN'	=> 'Path under your phpBB root directory, e.g. <samp>images/avatars/upload</samp>.<br />Avatar uploading <strong>will not be available</strong> if this path is not writable.<br />Double dots like <samp>../</samp> will be stripped from the path for security reasons.',
 	'MAX_AVATAR_SIZE'				=> 'Maximum avatar dimensions',
 	'MAX_AVATAR_SIZE_EXPLAIN'		=> 'Width x Height in pixels.',
 	'MAX_FILESIZE'					=> 'Maximum avatar file size',