1 files changed, 1 insertions, 1 deletions
diff --git a/phpBB/posting.php b/phpBB/posting.php
index 9361a2292b..1236361e18 100644
--- a/phpBB/posting.php
+++ b/phpBB/posting.php
@@ -520,7 +520,7 @@ if ($save && $user->data['is_registered'] && $auth->acl_get('u_savedrafts') && (
 	}
 	else
 	{
-		if (!$subject || !utf_clean_string($subject))
+		if (!$subject || !utf8_clean_string($subject))
 		{
 			$error[] = $user->lang['EMPTY_SUBJECT'];
 		}