diff --git a/lib/private/Files/Node/Folder.php b/lib/private/Files/Node/Folder.php
index 9d5b9e807e66c..1699f5ae618b1 100644
--- a/lib/private/Files/Node/Folder.php
+++ b/lib/private/Files/Node/Folder.php
@@ -550,7 +550,7 @@ public function getOrCreateFolder(string $path, int $maxRetries = 5): IFolder {
 					return $folder;
 				}
 			} catch (NotFoundException) {
-				$folder = in_array(dirname($path), ['.','/']) ? $this : $this->get(dirname($path));
+				$folder = in_array(dirname($path), ['.','/'], true) ? $this : $this->get(dirname($path));
 				if (!($folder instanceof Folder)) {
 					throw new NotPermittedException("Unable to create folder $path. Parent is not a directory.");
 				}