diff --git a/lib/private/Files/Cache/QuerySearchHelper.php b/lib/private/Files/Cache/QuerySearchHelper.php
index 75e203d5fd9..7e18d4c5879 100644
--- a/lib/private/Files/Cache/QuerySearchHelper.php
+++ b/lib/private/Files/Cache/QuerySearchHelper.php
@@ -195,7 +195,7 @@ class QuerySearchHelper {
 	}
 
 	/**
-	 * @return list{0?: array<array-key, ICache>, 1?: array<array-key, IMountPoint>}
+	 * @return array{0?: array<array-key, ICache>, 1?: array<array-key, IMountPoint>}
 	 */
 	public function getCachesAndMountPointsForSearch(IRootFolder $root, string $path, bool $limitToHome = false): array {
 		$rootLength = strlen($path);
diff --git a/lib/private/Files/Node/Folder.php b/lib/private/Files/Node/Folder.php
index 1f27185d8d9..ccfddeaf3a4 100644
--- a/lib/private/Files/Node/Folder.php
+++ b/lib/private/Files/Node/Folder.php
@@ -230,6 +230,8 @@ class Folder extends Node implements \OCP\Files\Folder {
 
 		/** @var QuerySearchHelper $searchHelper */
 		$searchHelper = \OC::$server->get(QuerySearchHelper::class);
+		/** @var \OCP\Files\Cache\ICache[] $caches */
+		/** @var \OCP\Files\Mount\IMountPoint[] $mountByMountPoint */
 		[$caches, $mountByMountPoint] = $searchHelper->getCachesAndMountPointsForSearch($this->root, $this->path, $limitToHome);
 		$resultsPerCache = $searchHelper->searchInCaches($query, $caches);
 
diff --git a/lib/private/SystemTag/SystemTagsInFilesDetector.php b/lib/private/SystemTag/SystemTagsInFilesDetector.php
index c9f26c58c02..8887ae414d5 100644
--- a/lib/private/SystemTag/SystemTagsInFilesDetector.php
+++ b/lib/private/SystemTag/SystemTagsInFilesDetector.php
@@ -54,6 +54,7 @@ class SystemTagsInFilesDetector {
 		}
 
 		$query = new SearchQuery($operator, $limit, $offset, []);
+		/** @var \OCP\Files\Cache\ICache[] $caches */
 		[$caches, ] = $this->searchHelper->getCachesAndMountPointsForSearch(
 			$this->getRootFolder($folder),
 			$folder->getPath(),