diff --git a/install/lib/installer_base.lib.php b/install/lib/installer_base.lib.php
index 51361c3c690dbe56d8c218d4f44d7313839c9497..4445d2e4f9bb8a9163ccc524f6a0ddf34fae9643 100644
--- a/install/lib/installer_base.lib.php
+++ b/install/lib/installer_base.lib.php
@@ -59,7 +59,7 @@ class installer_base {
 	}
 
 	public function simple_query($query, $answers, $default, $name = '') {
-		global $autoinstall;
+		global $autoinstall, $autoupdate;
 		$finished = false;
 		do {
 			if($name != '' && $autoinstall[$name] != '') {
@@ -104,7 +104,7 @@ class installer_base {
 	}
 
 	public function free_query($query, $default, $name = '') {
-		global $autoinstall;
+		global $autoinstall, $autoupdate;
 		if($name != '' && $autoinstall[$name] != '') {
 			if($autoinstall[$name] == 'default') {
 				$input = $default;