diff --git a/phpBB/includes/search/fulltext_sphinx.php b/phpBB/includes/search/fulltext_sphinx.php
index 4bacf74f93..7304e70ff8 100644
--- a/phpBB/includes/search/fulltext_sphinx.php
+++ b/phpBB/includes/search/fulltext_sphinx.php
@@ -878,8 +878,8 @@ class phpbb_search_fulltext_sphinx
 			<dd><input id="fulltext_sphinx_indexer_mem_limit" type="text" size="4" maxlength="10" name="config[fulltext_sphinx_indexer_mem_limit]" value="' . $this->config['fulltext_sphinx_indexer_mem_limit'] . '" /> ' . $this->user->lang['MIB'] . '</dd>
 		</dl>
 		<dl>
-			<dt><label for="fulltext_sphinx_config_file">' . $this->user->lang['FULLTEXT_SPHINX_CONFIG_FILE'] . $this->user->lang['COLON'] . '</label><br /><span>' . $this->user->lang['FULLTEXT_SPHINX_CONFIG_FILE_EXPLAIN'] . '</dt>
-			<dd>' . (($this->config_generate()) ? '<textarea readonly="readonly" rows="6">' . $this->config_file_data . '</textarea>' : $this->config_file_data) . '</dd>
+			<dt><label for="fulltext_sphinx_config_file">' . $this->user->lang['FULLTEXT_SPHINX_CONFIG_FILE'] . $this->user->lang['COLON'] . '</label><br /><span>' . $this->user->lang['FULLTEXT_SPHINX_CONFIG_FILE_EXPLAIN'] . '</span></dt>
+			<dd>' . (($this->config_generate()) ? '<textarea readonly="readonly" rows="6" id="sphinx_config_data">' . htmlspecialchars($this->config_file_data) . '</textarea>' : $this->config_file_data) . '</dd>
 		<dl>
 		';