diff --git a/client/js/dpaste.js b/client/js/dpaste.js
index 89fc32b..0eb993f 100644
--- a/client/js/dpaste.js
+++ b/client/js/dpaste.js
@@ -3,7 +3,7 @@
 // -----------------------------------------------------------------------------
 // Add data-platform to the body tag to show platform related shortcuts
 // -----------------------------------------------------------------------------
-const isMac = navigator.userAgentData.platform.includes('Mac') !== -1;
+const isMac = navigator.platform.indexOf('Mac') !== -1;
 document.body.dataset.platform = isMac ? 'mac' : 'win';
 
 // -----------------------------------------------------------------------------