diff --git a/assets/modules/analytics.js b/assets/modules/analytics.js
index 0fa2079..be8b6de 100644
--- a/assets/modules/analytics.js
+++ b/assets/modules/analytics.js
@@ -5,7 +5,7 @@ const SK_HASH = '_h'
 let encKey = null
 
 async function importKey(b64) {
-    const raw = Uint8Array.from(globalThis.atob(b64), c => c.charCodeAt(0))
+    const raw = Uint8Array.from(globalThis.atob(b64), c => c.codePointAt(0))
     return globalThis.crypto.subtle.importKey('raw', raw, 'AES-GCM', false, ['encrypt', 'decrypt'])
 }
 
@@ -23,7 +23,7 @@ async function encrypt(data) {
 
 async function decrypt(b64) {
     if (!encKey) return null
-    const raw = Uint8Array.from(globalThis.atob(b64), c => c.charCodeAt(0))
+    const raw = Uint8Array.from(globalThis.atob(b64), c => c.codePointAt(0))
     const iv = raw.slice(0, 12)
     const data = raw.slice(12)
     try {