Fix missing use in mod/ping

diff --git a/mod/ping.php b/mod/ping.php
index 7153752b0525af3a46dce8f45db901c696cac144..47c8cb40d7009e3e85c885bbf1588264241ec6a8 100644 (file)
--- a/mod/ping.php
+++ b/mod/ping.php
@@ -9,6 +9,7 @@ use Friendica\Content\ForumManager;
 use Friendica\Content\Text\BBCode;
 use Friendica\Core\Addon;
 use Friendica\Core\Cache;
+use Friendica\Core\Config;
 use Friendica\Core\L10n;
 use Friendica\Core\PConfig;
 use Friendica\Core\System;