diff --git a/lib/private/Files/Node/Folder.php b/lib/private/Files/Node/Folder.php
index b376d4673e411..5669f2a4b4599 100644
--- a/lib/private/Files/Node/Folder.php
+++ b/lib/private/Files/Node/Folder.php
@@ -109,7 +109,7 @@ public function getDirectoryListing() {
 		}, $folderContent);
 	}
 
-	protected function createNode(string $path, ?FileInfo $info = null, bool $infoHasSubMountsIncluded = true): INode {
+	protected function createNode(string $path, ?FileInfo $info = null): INode {
 		if (is_null($info)) {
 			$isDir = $this->view->is_dir($path);
 		} else {
@@ -326,7 +326,7 @@ protected function getAppDataDirectoryName(): string {
 	 * @param int $id
 	 * @return array
 	 */
-	protected function getByIdInRootMount(int $id): array {
+	protected function 	getByIdInRootMount(int $id): array {
 		if (!method_exists($this->root, 'createNode')) {
 			// Always expected to be false. Being a method of Folder, this is
 			// always implemented. For it is an internal method and should not
@@ -335,7 +335,7 @@ protected function getByIdInRootMount(int $id): array {
 		}
 		$mount = $this->root->getMount('');
 		$storage = $mount->getStorage();
-		$cacheEntry = $storage?->getCache($this->path)->get($id);
+		$cacheEntry = $storage ? $storage->getCache($this->path)->get($id) : null;
 		if (!$cacheEntry) {
 			return [];
 		}
diff --git a/lib/private/Files/Node/Node.php b/lib/private/Files/Node/Node.php
index 7c8c019783407..5af317b2a498f 100644
--- a/lib/private/Files/Node/Node.php
+++ b/lib/private/Files/Node/Node.php
@@ -72,7 +72,7 @@ class Node implements INode {
 	 * @param string $path
 	 * @param FileInfo $fileInfo
 	 */
-	public function __construct($root, $view, $path, $fileInfo = null, ?Node $parent = null) {
+	public function __construct(IRootFolder $root, $view, $path, $fileInfo = null, ?Node $parent = null) {
 		if (Filesystem::normalizePath($view->getRoot()) !== '/') {
 			throw new PreConditionNotMetException('The view passed to the node should not have any fake root set');
 		}
@@ -285,7 +285,11 @@ public function isCreatable() {
 		return $this->getFileInfo()->isCreatable();
 	}
 
-	public function getParent(): INode|IRootFolder {
+	/**
+	 * @return INode|IRootFolder
+	 * @throws NotFoundException
+	 */
+	public function getParent() {
 		if ($this->parent === null) {
 			$newPath = dirname($this->path);
 			if ($newPath === '' || $newPath === '.' || $newPath === '/') {
diff --git a/lib/private/Files/Node/Root.php b/lib/private/Files/Node/Root.php
index 6b82c9f7250a8..e102d993c1084 100644
--- a/lib/private/Files/Node/Root.php
+++ b/lib/private/Files/Node/Root.php
@@ -336,9 +336,10 @@ public function isShareable() {
 	}
 
 	/**
+	 * @return INode|IRootFolder
 	 * @throws \OCP\Files\NotFoundException
 	 */
-	public function getParent(): INode|IRootFolder {
+	public function getParent() {
 		throw new NotFoundException();
 	}