diff --git a/lib/private/User/Session.php b/lib/private/User/Session.php
index ab6ec9f38d30f..f2c0010b6be7a 100644
--- a/lib/private/User/Session.php
+++ b/lib/private/User/Session.php
@@ -43,6 +43,7 @@
 use OC\Authentication\Exceptions\PasswordLoginForbiddenException;
 use OC\Authentication\Token\IProvider;
 use OC\Authentication\Token\IToken;
+use OC\Authentication\TwoFactorAuth\Manager as TwoFactorAuthManager;
 use OC\Hooks\Emitter;
 use OC\Hooks\PublicEmitter;
 use OC_User;
@@ -524,7 +525,7 @@ protected function isTwoFactorEnforced($username) {
 			$user = $users[0];
 		}
 		// DI not possible due to cyclic dependencies :'-/
-		return OC::$server->getTwoFactorAuthManager()->isTwoFactorAuthenticated($user);
+		return OC::$server->get(TwoFactorAuthManager::class)->isTwoFactorAuthenticated($user);
 	}
 
 	/**
diff --git a/lib/private/legacy/OC_JSON.php b/lib/private/legacy/OC_JSON.php
index b6791fe4b85ee..5188a92fe1d93 100644
--- a/lib/private/legacy/OC_JSON.php
+++ b/lib/private/legacy/OC_JSON.php
@@ -27,6 +27,9 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>
  *
  */
+
+use OC\Authentication\TwoFactorAuth\Manager as TwoFactorAuthManager;
+
 class OC_JSON {
 	/**
 	 * Check if the app is enabled, send json error msg if not
@@ -48,7 +51,7 @@ public static function checkAppEnabled($app) {
 	 * @suppress PhanDeprecatedFunction
 	 */
 	public static function checkLoggedIn() {
-		$twoFactorAuthManger = \OC::$server->getTwoFactorAuthManager();
+		$twoFactorAuthManger = \OC::$server->get(TwoFactorAuthManager::class);
 		if (!\OC::$server->getUserSession()->isLoggedIn()
 			|| $twoFactorAuthManger->needsSecondFactor(\OC::$server->getUserSession()->getUser())) {
 			$l = \OC::$server->getL10N('lib');
diff --git a/lib/private/legacy/OC_Util.php b/lib/private/legacy/OC_Util.php
index 42a0d9450b567..09d0719ff2b55 100644
--- a/lib/private/legacy/OC_Util.php
+++ b/lib/private/legacy/OC_Util.php
@@ -65,6 +65,7 @@
  */
 
 use bantu\IniGetWrapper\IniGetWrapper;
+use OC\Authentication\TwoFactorAuth\Manager as TwoFactorAuthManager;
 use OC\Files\SetupManager;
 use OCP\Files\Template\ITemplateManager;
 use OCP\IConfig;
@@ -785,7 +786,7 @@ public static function checkLoggedIn() {
 			exit();
 		}
 		// Redirect to 2FA challenge selection if 2FA challenge was not solved yet
-		if (\OC::$server->getTwoFactorAuthManager()->needsSecondFactor(\OC::$server->getUserSession()->getUser())) {
+		if (\OC::$server->get(TwoFactorAuthManager::class)->needsSecondFactor(\OC::$server->getUserSession()->getUser())) {
 			header('Location: ' . \OC::$server->getURLGenerator()->linkToRoute('core.TwoFactorChallenge.selectChallenge'));
 			exit();
 		}