diff --git a/app.js b/app.js
index a5974f5..954bc6b 100644
--- a/app.js
+++ b/app.js
@@ -1129,6 +1129,19 @@ function addMessage(name, message, avatar, topic) {
   }
 }
 
+async function updateIcon(username, avatarBuffer) {
+  const userIcon = document.querySelector(`img[src*="${username}.png"]`);
+  if (userIcon) {
+    const avatarBlob = new Blob([avatarBuffer], { type: 'image/png' });
+    const avatarUrl = URL.createObjectURL(avatarBlob);
+    userIcon.src = updatePortInUrl(avatarUrl);
+
+    config.userAvatar = avatarUrl;
+    writeConfigToFile("./config.json");
+  }
+}
+
+
 function clearMessages() {
   const messagesContainer = document.querySelector('#messages');
   while (messagesContainer.firstChild) {