diff --git a/setup/src/Magento/Setup/Model/Installer.php b/setup/src/Magento/Setup/Model/Installer.php
index 4a9bfd9063656..60cf85efc40ca 100644
--- a/setup/src/Magento/Setup/Model/Installer.php
+++ b/setup/src/Magento/Setup/Model/Installer.php
@@ -1010,6 +1010,7 @@ private function installOrderIncrementPrefix($orderIncrementPrefix)
     public function installAdminUser($data)
     {
         $this->assertDbConfigExists();
+        $data += ['db-prefix' => $this->deploymentConfig->get(ConfigOptionsListConstants::CONFIG_PATH_DB_PREFIX)];
         $setup = $this->setupFactory->create($this->context->getResources());
         $adminAccount = $this->adminAccountFactory->create($setup->getConnection(), (array)$data);
         $adminAccount->save();