diff --git a/index.php b/index.php
index bd3fa0b..1b85370 100644
--- a/index.php
+++ b/index.php
@@ -960,12 +960,12 @@ function code_login_page() {
 else {
 	$user_agent = "RETSMD/1.0";
 	$rets_version = "1.5";
-	$username = $_REQUEST['username'];
-	$password = $_REQUEST['password'];
-	$login_url = $_REQUEST['login_url'];
+	$username = isset($_REQUEST['username']) ? $_REQUEST['username'] : "";
+	$password = isset($_REQUEST['password']) ? $_REQUEST['password'] : "" ;
+	$login_url = isset($_REQUEST['login_url']) ? $_REQUEST['login_url'] : "";
 }
 
-$possible_versions = array("1.0","1.5","1.7","1.7.2");
+$possible_versions = array("1.0","1.5","1.7","1.7.2","1.8");
 $version_options = "";
 foreach ($possible_versions as $version) {
 	if ($version == $rets_version) {