diff --git a/src/modules/fedimbed.js b/src/modules/fedimbed.js
index e693ea2..ea8b635 100644
--- a/src/modules/fedimbed.js
+++ b/src/modules/fedimbed.js
@@ -801,7 +801,7 @@ async function processUrl(msg, url, spoiler = false) {
           filename:
             (cw != "" || spoiler ? "SPOILER_" : "") +
             (attachment.type.indexOf("/") > -1
-              ? attachment.type.replace("/", ".")
+              ? attachment.type.replace("/", ".").replace("quicktime", "mov")
               : attachment.type +
                 "." +
                 (url.match(/\.([a-z0-9]{3,4})$/)?.[0] ?? "mp4")),