diff --git a/phpBB/adm/index.php b/phpBB/adm/index.php
index dd8f4c279d..f673e2af05 100644
--- a/phpBB/adm/index.php
+++ b/phpBB/adm/index.php
@@ -276,7 +276,7 @@ function build_cfg_template($tpl_type, $key, &$new, $config_key, $vars)
 			$size = (int) $tpl_type[1];
 			$maxlength = (int) $tpl_type[2];
 
-			$tpl = '<input id="' . $key . '" type="' . $tpl_type[0] . '"' . (($size) ? ' size="' . $size . '"' : '') . ' maxlength="' . (($maxlength) ? $maxlength : 255) . '" name="' . $name . '" value="' . $new[$config_key] . '" />';
+			$tpl = '<input id="' . $key . '" type="' . $tpl_type[0] . '"' . (($size) ? ' size="' . $size . '"' : '') . ' maxlength="' . (($maxlength) ? $maxlength : 255) . '" name="' . $name . '" value="' . $new[$config_key] . '"' . (($tpl_type[0] === 'password') ?  ' autocomplete="off"' : '') . ' />';
 		break;
 
 		case 'dimension':
diff --git a/phpBB/includes/auth/auth_ldap.php b/phpBB/includes/auth/auth_ldap.php
index e8c957aaa3..5dfa74ddab 100644
--- a/phpBB/includes/auth/auth_ldap.php
+++ b/phpBB/includes/auth/auth_ldap.php
@@ -335,7 +335,7 @@ function acp_ldap(&$new)
 	</dl>
 	<dl>
 		<dt><label for="ldap_password">' . $user->lang['LDAP_PASSWORD'] . ':</label><br /><span>' . $user->lang['LDAP_PASSWORD_EXPLAIN'] . '</span></dt>
-		<dd><input type="password" id="ldap_password" size="40" name="config[ldap_password]" value="' . $new['ldap_password'] . '" /></dd>
+		<dd><input type="password" id="ldap_password" size="40" name="config[ldap_password]" value="' . $new['ldap_password'] . '" autocomplete="off" /></dd>
 	</dl>
 	';