diff --git a/lib/private/files/view.php b/lib/private/files/view.php
index e08cb20f73dd8e1ada3114a2c0121485d8a820c1..85af4a9abef2ec1a50b8fbb691c4bf8455c26767 100644
--- a/lib/private/files/view.php
+++ b/lib/private/files/view.php
@@ -781,6 +781,9 @@ class View {
 			return false;
 		}
 		$defaultRoot = Filesystem::getRoot();
+		if ($defaultRoot === null) {
+			return false;
+		}
 		if ($this->fakeRoot === $defaultRoot) {
 			return true;
 		}