diff --git a/apps/federatedfilesharing/lib/AppInfo/Application.php b/apps/federatedfilesharing/lib/AppInfo/Application.php
index c4954948a7200..c2ae0120ce792 100644
--- a/apps/federatedfilesharing/lib/AppInfo/Application.php
+++ b/apps/federatedfilesharing/lib/AppInfo/Application.php
@@ -7,7 +7,6 @@
  */
 namespace OCA\FederatedFileSharing\AppInfo;
 
-use Closure;
 use OCA\FederatedFileSharing\Listeners\LoadAdditionalScriptsListener;
 use OCA\FederatedFileSharing\Notifier;
 use OCA\FederatedFileSharing\OCM\CloudFederationProviderFiles;
@@ -16,8 +15,8 @@
 use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
 use OCP\AppFramework\Bootstrap\IRegistrationContext;
-use OCP\AppFramework\IAppContainer;
 use OCP\Federation\ICloudFederationProviderManager;
+use Psr\Container\ContainerInterface;
 
 class Application extends App implements IBootstrap {
 	public function __construct() {
@@ -30,11 +29,11 @@ public function register(IRegistrationContext $context): void {
 	}
 
 	public function boot(IBootContext $context): void {
-		$context->injectFn(Closure::fromCallable([$this, 'registerCloudFederationProvider']));
+		$context->injectFn($this->registerCloudFederationProvider(...));
 	}
 
 	private function registerCloudFederationProvider(ICloudFederationProviderManager $manager,
-		IAppContainer $appContainer): void {
+		ContainerInterface $appContainer): void {
 		$fileResourceTypes = ['file', 'folder'];
 		foreach ($fileResourceTypes as $type) {
 			$manager->addCloudFederationProvider($type,
diff --git a/build/psalm-baseline.xml b/build/psalm-baseline.xml
index 71d9fe016a481..dabae90a25b01 100644
--- a/build/psalm-baseline.xml
+++ b/build/psalm-baseline.xml
@@ -1216,11 +1216,6 @@
 			)]]></code>
     </DeprecatedMethod>
   </file>
-  <file src="apps/federatedfilesharing/lib/AppInfo/Application.php">
-    <DeprecatedInterface>
-      <code><![CDATA[IAppContainer]]></code>
-    </DeprecatedInterface>
-  </file>
   <file src="apps/federatedfilesharing/lib/Controller/RequestHandlerController.php">
     <InvalidArgument>
       <code><![CDATA[$id]]></code>