diff --git a/lib/index.ts b/lib/index.ts
index 356b4e0..027f09d 100644
--- a/lib/index.ts
+++ b/lib/index.ts
@@ -1,7 +1,8 @@
-/**
+/*!
  * SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
  * SPDX-License-Identifier: GPL-3.0-or-later
  */
+
 import { loadState } from '@nextcloud/initial-state'
 
 export function getCapabilities(): Object {
@@ -9,9 +10,9 @@ export function getCapabilities(): Object {
 		return loadState('core', 'capabilities')
 	} catch (error) {
 		console.debug('Could not find capabilities initial state fall back to _oc_capabilities')
-		if (!('_oc_capabilities' in window)) {
+		if (!('_oc_capabilities' in globalThis)) {
 			return {}
 		}
-		return window['_oc_capabilities'] as Object
+		return globalThis['_oc_capabilities'] as Object
 	}
 }