diff --git a/tests/Install/InstallCept.php b/tests/Install/InstallCept.php
index 61dd4fde2..2fcbe7bf6 100644
--- a/tests/Install/InstallCept.php
+++ b/tests/Install/InstallCept.php
@@ -57,7 +57,7 @@ $I->submitForm('#body', [
 $I->seeInCurrentUrl('act=dispInstallManagerForm');
 $I->seeElement('select[name="time_zone"]');
 $I->fillField('#aMail', 'admin@admin.net');
-$I->submitForm('#content form', [
+$I->submitForm('#body', [
     'act' => 'procInstall',
     'time_zone' => '+0900',
     'db_type' => 'mysqli',