diff --git a/app.js b/app.js
index 6f29bed..9626cc0 100644
--- a/app.js
+++ b/app.js
@@ -338,7 +338,7 @@ function addFileMessage(from, fileName, fileUrl, fileType, avatar) {
   $div.classList.add('message');
 
   const $img = document.createElement('img');
-  $img.src = avatar || 'https://via.placeholder.com/40';
+  $img.src = updatePortInUrl(avatar) || 'https://via.placeholder.com/40';
   $img.classList.add('avatar');
   $div.appendChild($img);
 
@@ -352,13 +352,13 @@ function addFileMessage(from, fileName, fileUrl, fileType, avatar) {
 
   if (fileType.startsWith('image/')) {
     const $image = document.createElement('img');
-    $image.src = fileUrl;
+    $image.src = updatePortInUrl(fileUrl);
     $image.alt = fileName;
     $image.classList.add('attached-image');
     $content.appendChild($image);
   } else {
     const $fileLink = document.createElement('a');
-    $fileLink.href = fileUrl;
+    $fileLink.href = updatePortInUrl(fileUrl);
     $fileLink.textContent = `File: ${fileName}`;
     $fileLink.download = fileName;
     $content.appendChild($fileLink);