diff --git a/lib/os/class.ISPConfigDebianOS.inc.php b/lib/os/class.ISPConfigDebianOS.inc.php
index fff17d720d369968e08c8fd226f73e7a27ef2fc0..e877bf03c181367db0ac1917b0db3c55b742da67 100644
--- a/lib/os/class.ISPConfigDebianOS.inc.php
+++ b/lib/os/class.ISPConfigDebianOS.inc.php
@@ -1514,7 +1514,7 @@ mailman-unsubscribe:  "|/var/lib/mailman/mail/mailman unsubscribe mailman"';
 
 			if(ISPConfig::$WEBSERVER === ISPC_WEBSERVER_NGINX) {
 				$this->stopService('apache2');
-				$cmd = 'systemctl disable apache2';
+				$cmd = 'systemctl disable apache2 >/dev/null 2>&1';
 				$this->exec($cmd); // ignore if this fails
 				$this->startService('nginx');
 			}
diff --git a/lib/os/class.ISPConfigUbuntuOS.inc.php b/lib/os/class.ISPConfigUbuntuOS.inc.php
index 90b562432178fb6fc1edb3444ccefcfddbf6b395..3ab28dc51dfe6ec0d851e9c9e5fe167104fccb08 100644
--- a/lib/os/class.ISPConfigUbuntuOS.inc.php
+++ b/lib/os/class.ISPConfigUbuntuOS.inc.php
@@ -37,12 +37,14 @@ deb http://security.ubuntu.com/ubuntu bionic-security multiverse
 
 	protected function afterPackageInstall($section = '') {
 		if($section === 'mail') {
+			$this->stopService('clamav-freshclam');
 			$cmd = 'freshclam';
 			$result = $this->exec($cmd, array(62));
 			if($result === false) {
 				//throw new ISPConfigOSException('Command ' . $cmd . ' failed.');
 			}
 
+			$this->startService('clamav-freshclam');
 			$this->startService('clamav-daemon');
 		}
 	}