diff --git a/src/Module/OAuth/Acknowledge.php b/src/Module/OAuth/Acknowledge.php
index 44c1b1a0fc..82ad166bc9 100644
--- a/src/Module/OAuth/Acknowledge.php
+++ b/src/Module/OAuth/Acknowledge.php
@@ -26,7 +26,7 @@ class Acknowledge extends BaseApi
 	protected function post(array $request = [])
 	{
 		DI::session()->set('oauth_acknowledge', true);
-		DI::app()->redirect(DI::session()->get('return_path'));
+		DI::apphelper()->redirect(DI::session()->get('return_path'));
 	}
 
 	protected function content(array $request = []): string
diff --git a/src/Module/OAuth/Authorize.php b/src/Module/OAuth/Authorize.php
index 266f00402e..d4f3483c66 100644
--- a/src/Module/OAuth/Authorize.php
+++ b/src/Module/OAuth/Authorize.php
@@ -59,14 +59,14 @@ class Authorize extends BaseApi
 		$uid = DI::userSession()->getLocalUserId();
 		if (empty($uid)) {
 			Logger::info('Redirect to login');
-			DI::app()->redirect('login?' . http_build_query(['return_authorize' => $redirect]));
+			DI::apphelper()->redirect('login?' . http_build_query(['return_authorize' => $redirect]));
 		} else {
 			Logger::info('Already logged in user', ['uid' => $uid]);
 		}
 
 		if (!OAuth::existsTokenForUser($application, $uid) && !DI::session()->get('oauth_acknowledge')) {
 			Logger::info('Redirect to acknowledge');
-			DI::app()->redirect('oauth/acknowledge?' . http_build_query(['return_authorize' => $redirect, 'application' => $application['name']]));
+			DI::apphelper()->redirect('oauth/acknowledge?' . http_build_query(['return_authorize' => $redirect, 'application' => $application['name']]));
 		}
 
 		DI::session()->remove('oauth_acknowledge');
@@ -77,7 +77,7 @@ class Authorize extends BaseApi
 		}
 
 		if ($application['redirect_uri'] != 'urn:ietf:wg:oauth:2.0:oob') {
-			DI::app()->redirect($request['redirect_uri'] . (strpos($request['redirect_uri'], '?') ? '&' : '?') . http_build_query(['code' => $token['code'], 'state' => $request['state']]));
+			DI::apphelper()->redirect($request['redirect_uri'] . (strpos($request['redirect_uri'], '?') ? '&' : '?') . http_build_query(['code' => $token['code'], 'state' => $request['state']]));
 		}
 
 		self::$oauth_code = $token['code'];
diff --git a/src/Module/RandomProfile.php b/src/Module/RandomProfile.php
index 4393bb579b..d590af634f 100644
--- a/src/Module/RandomProfile.php
+++ b/src/Module/RandomProfile.php
@@ -18,13 +18,13 @@ class RandomProfile extends BaseModule
 {
 	protected function content(array $request = []): string
 	{
-		$a = DI::app();
+		$appHelper = DI::apphelper();
 
 		$contact = Contact::getRandomContact();
 
 		if (!empty($contact)) {
 			$link = Contact::magicLinkByContact($contact);
-			$a->redirect($link);
+			$appHelper->redirect($link);
 		}
 
 		DI::baseUrl()->redirect('profile');