diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index db0e741d91..fb0258996c 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -2746,7 +2746,7 @@ function phpbb_checkdnsrr($host, $type = '')
 	}
 	else if (function_exists('checkdnsrr'))
 	{
-		return (checkdnsrr($domain, $type)) ? true : false;
+		return (checkdnsrr($host, $type)) ? true : false;
 	}
 
 	return NULL;