diff --git a/phpBB/install/install.php b/phpBB/install/install.php
index b045b8eda8..9d11119731 100644
--- a/phpBB/install/install.php
+++ b/phpBB/install/install.php
@@ -370,7 +370,7 @@ $upgrade_now = (!empty($HTTP_POST_VARS['upgrade_now'])) ? $HTTP_POST_VARS['upgra
 
 $dbms = isset($HTTP_POST_VARS['dbms']) ? $HTTP_POST_VARS['dbms'] : '';
 
-$dbhost = (!empty($HTTP_POST_VARS['dbhost'])) ? $HTTP_POST_VARS['dbhost'] : '';
+$dbhost = (!empty($HTTP_POST_VARS['dbhost'])) ? $HTTP_POST_VARS['dbhost'] : 'localhost';
 $dbuser = (!empty($HTTP_POST_VARS['dbuser'])) ? $HTTP_POST_VARS['dbuser'] : '';
 $dbpasswd = (!empty($HTTP_POST_VARS['dbpasswd'])) ? $HTTP_POST_VARS['dbpasswd'] : '';
 $dbname = (!empty($HTTP_POST_VARS['dbname'])) ? $HTTP_POST_VARS['dbname'] : '';