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-rw-r--r--apps/files/lib/Controller/ViewController.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/apps/files/lib/Controller/ViewController.php b/apps/files/lib/Controller/ViewController.php
index 2934ac06704..67cd0bf2aef 100644
--- a/apps/files/lib/Controller/ViewController.php
+++ b/apps/files/lib/Controller/ViewController.php
@@ -135,7 +135,7 @@ class ViewController extends Controller {
* @param string $fileid
* @return TemplateResponse|RedirectResponse
*/
- public function showFile(string $fileid = null): Response {
+ public function showFile(?string $fileid = null): Response {
if (!$fileid) {
return new RedirectResponse($this->urlGenerator->linkToRoute('files.view.index'));
}