diff --git a/lib/os/class.ISPConfigDebianOS.inc.php b/lib/os/class.ISPConfigDebianOS.inc.php
index 3085d13a1cc221f7b0e5a3be15bca9b5b294e674..6c1bdac11f6dac559fc62f24d8342287bcbdcc2a 100644
--- a/lib/os/class.ISPConfigDebianOS.inc.php
+++ b/lib/os/class.ISPConfigDebianOS.inc.php
@@ -157,6 +157,12 @@ class ISPConfigDebianOS extends ISPConfigBaseOS {
 		return $packages;
 	}
 
+	protected function getApacheModulesToDisable() {
+		$modules = array('php8.0', 'mpm_prefork');
+
+		return $modules;
+	}
+
 	protected function getApacheModulesToEnable() {
 		$modules = array('suexec', 'rewrite', 'ssl', 'actions', 'include', 'dav_fs', 'dav', 'auth_digest', 'cgi', 'headers', 'proxy_fcgi', 'alias', 'http2', 'mpm_event');
 
@@ -851,15 +857,15 @@ mailman-unsubscribe:  "|/var/lib/mailman/mail/mailman unsubscribe mailman"';
 		$this->installPackages($packages);
 
 		if(ISPConfig::shallInstall('web') && ISPConfig::$WEBSERVER === ISPC_WEBSERVER_APACHE) {
-			// Disable mpm_prefork so mpm_event can be used with http2
-			ISPConfigLog::info('Disabling mpm_prefork module.', true);
-			$modules = 'mpm_prefork';
-			$cmd = 'a2dismod ' . $modules . ' 2>&1';
+			// Disable conflicting modules so mpm_event can be used with http2
+			ISPConfigLog::info('Disabling conflicting apache modules.', true);
+			$modules = $this->getApacheModulesToDisable();
+			$cmd = 'a2dismod ' . implode(' ', $modules) . ' 2>&1';
 			$result = $this->exec($cmd);
 			if($result === false) {
 				throw new ISPConfigOSException('Command ' . $cmd . ' failed.');
 			}
-			
+
 			ISPConfigLog::info('Enabling apache modules.', true);
 			$modules = $this->getApacheModulesToEnable();
 			$cmd = 'a2enmod ' . implode(' ', $modules) . ' 2>&1';