diff --git a/app.js b/app.js
index 7cd574f..0300163 100644
--- a/app.js
+++ b/app.js
@@ -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);