diff --git a/lib/ACL/ACLManagerFactory.php b/lib/ACL/ACLManagerFactory.php
index 7a2e571eb..cd5915d3a 100644
--- a/lib/ACL/ACLManagerFactory.php
+++ b/lib/ACL/ACLManagerFactory.php
@@ -9,7 +9,7 @@
 namespace OCA\GroupFolders\ACL;
 
 use OCA\GroupFolders\Trash\TrashManager;
-use OCP\IConfig;
+use OCP\IAppConfig;
 use OCP\IUser;
 use Psr\Log\LoggerInterface;
 
@@ -17,7 +17,7 @@ class ACLManagerFactory {
 	public function __construct(
 		private RuleManager $ruleManager,
 		private TrashManager $trashManager,
-		private IConfig $config,
+		private IAppConfig $config,
 		private LoggerInterface $logger,
 		private \Closure $rootFolderProvider,
 	) {
@@ -31,7 +31,7 @@ public function getACLManager(IUser $user, ?int $rootStorageId = null): ACLManag
 			$user,
 			$this->rootFolderProvider,
 			$rootStorageId,
-			$this->config->getAppValue('groupfolders', 'acl-inherit-per-user', 'false') === 'true',
+			$this->config->getValueString('groupfolders', 'acl-inherit-per-user', 'false') === 'true',
 		);
 	}
 }
diff --git a/lib/AppInfo/Application.php b/lib/AppInfo/Application.php
index 929d955a3..26724ebdf 100644
--- a/lib/AppInfo/Application.php
+++ b/lib/AppInfo/Application.php
@@ -51,7 +51,6 @@
 use OCP\Files\NotFoundException;
 use OCP\IAppConfig;
 use OCP\ICacheFactory;
-use OCP\IConfig;
 use OCP\IDBConnection;
 use OCP\IGroup;
 use OCP\IRequest;
@@ -105,9 +104,10 @@ public function register(IRegistrationContext $context): void {
 			$rootProvider = function () use ($c): Folder {
 				return $c->get('GroupAppFolder');
 			};
-			$config = $c->get(IConfig::class);
-			$allowRootShare = $config->getAppValue('groupfolders', 'allow_root_share', 'true') === 'true';
-			$enableEncryption = $config->getAppValue('groupfolders', 'enable_encryption', 'false') === 'true';
+			/** @var IAppConfig $config */
+			$config = $c->get(IAppConfig::class);
+			$allowRootShare = $config->getValueString('groupfolders', 'allow_root_share', 'true') === 'true';
+			$enableEncryption = $config->getValueString('groupfolders', 'enable_encryption', 'false') === 'true';
 
 			return new MountProvider(
 				$c->get(FolderManager::class),
@@ -208,7 +208,7 @@ public function register(IRegistrationContext $context): void {
 				return new ExpireGroupTrashJob(
 					$c->get(TrashBackend::class),
 					$c->get(Expiration::class),
-					$c->get(IConfig::class),
+					$c->get(IAppConfig::class),
 					$c->get(ITimeFactory::class)
 				);
 			}
@@ -224,7 +224,7 @@ public function register(IRegistrationContext $context): void {
 			return new ACLManagerFactory(
 				$c->get(RuleManager::class),
 				$c->get(TrashManager::class),
-				$c->get(IConfig::class),
+				$c->get(IAppConfig::class),
 				$c->get(LoggerInterface::class),
 				$rootFolderProvider
 			);
diff --git a/lib/BackgroundJob/ExpireGroupTrash.php b/lib/BackgroundJob/ExpireGroupTrash.php
index 4e538b31c..f42b06e2b 100644
--- a/lib/BackgroundJob/ExpireGroupTrash.php
+++ b/lib/BackgroundJob/ExpireGroupTrash.php
@@ -12,13 +12,13 @@
 use OCA\GroupFolders\Trash\TrashBackend;
 use OCP\AppFramework\Utility\ITimeFactory;
 use OCP\BackgroundJob\TimedJob;
-use OCP\IConfig;
+use OCP\IAppConfig;
 
 class ExpireGroupTrash extends TimedJob {
 	public function __construct(
 		private TrashBackend $trashBackend,
 		private Expiration $expiration,
-		private IConfig $config,
+		private IAppConfig $config,
 		ITimeFactory $timeFactory,
 	) {
 		parent::__construct($timeFactory);
@@ -27,7 +27,7 @@ public function __construct(
 	}
 
 	protected function run(mixed $argument): void {
-		$backgroundJob = $this->config->getAppValue('files_trashbin', 'background_job_expire_trash', 'yes');
+		$backgroundJob = $this->config->getValueString('files_trashbin', 'background_job_expire_trash', 'yes');
 		if ($backgroundJob === 'no') {
 			return;
 		}