diff --git a/chat_window.php b/chat_window.php
index 9dedfaf..4e47937 100644
--- a/chat_window.php
+++ b/chat_window.php
@@ -619,8 +619,8 @@ if (empty($user_id)) {
                             }
 
                             let fullUrl = '';
-                            if (isValidMediaUrl(msg.local_file)) {
-                                fullUrl = `/api/version/media-url.php?local=${encodeURIComponent(msg.local_file)}`;
+                            if (isValidMediaUrl(msg.media_url_external)) {
+                                fullUrl = `/api/version/media-url.php?local=${encodeURIComponent(msg.media_url_external)}`;
                             } else if (isValidMediaUrl(msg.media_url_external)) {
                                 if (msg.media_url_external.indexOf('api/get_media.php?id=') !== -1) {
                                     const parts = msg.media_url_external.split('id=');