diff --git a/lib/private/updater.php b/lib/private/updater.php
index 55d9a5bed2..fc852991a1 100644
--- a/lib/private/updater.php
+++ b/lib/private/updater.php
@@ -227,6 +227,7 @@ class Updater extends BasicEmitter {
 
 		$this->emit('\OC\Updater', 'resetLogLevel', [ $logLevel, $this->logLevelNames[$logLevel] ]);
 		$this->config->setSystemValue('loglevel', $logLevel);
+		$this->config->setSystemValue('installed', true);
 
 		return $success;
 	}