diff --git a/app/assets/javascripts/app/services/helpers/webcrypto.js b/app/assets/javascripts/app/services/helpers/webcrypto.js
index e72fbca02..2601f72c3 100644
--- a/app/assets/javascripts/app/services/helpers/webcrypto.js
+++ b/app/assets/javascripts/app/services/helpers/webcrypto.js
@@ -1,4 +1,4 @@
-var subtleCrypto = window.crypto.subtle;
+var subtleCrypto = window.crypto ? window.crypto.subtle : null;
 
 class SNCryptoWeb extends SNCrypto {