diff --git a/lib/private/legacy/OC_Util.php b/lib/private/legacy/OC_Util.php
index d445afaa092..c4606383666 100644
--- a/lib/private/legacy/OC_Util.php
+++ b/lib/private/legacy/OC_Util.php
@@ -970,7 +970,7 @@ class OC_Util {
 		}
 
 		foreach (['secret', 'instanceid', 'passwordsalt'] as $requiredConfig) {
-			if ($config->getValue($requiredConfig, '') === '' && !\OC::$CLI) {
+			if ($config->getValue($requiredConfig, '') === '' && !\OC::$CLI && $config->getValue('installed', false)) {
 				$errors[] = [
 					'error' => $l->t('The required \'' . $requiredConfig . '\' config variable is not configued in the config.php file.'),
 					'hint' => $l->t('Please ask your server administrator to check the Nextcloud configuration.')