diff --git a/src/modules/stream/internal.js b/src/modules/stream/internal.js
index 4204b1a2..00eec9cb 100644
--- a/src/modules/stream/internal.js
+++ b/src/modules/stream/internal.js
@@ -75,36 +75,36 @@ async function handleYoutubeStream(streamInfo, res) {
     }
 }
 
-function transformHLSMediaPlaylist(streamInfo, hlsPlaylist) {
-    function generateInternalStreamsOfSegments(segment) {
+function transformHlsMediaPlaylist(streamInfo, hlsPlaylist) {
+    const makeInternalSegments = (segment) => {
         const fullUri = new URL(segment.uri, streamInfo.url).toString();
         segment.uri = createInternalStream(fullUri, streamInfo);
 
         return segment;
     }
 
-    hlsPlaylist.segments =
-        hlsPlaylist.segments.map(generateInternalStreamsOfSegments);
-    hlsPlaylist.prefetchSegments =
-        hlsPlaylist.prefetchSegments.map(generateInternalStreamsOfSegments);
+    hlsPlaylist.segments = hlsPlaylist.segments.map(makeInternalSegments);
+    hlsPlaylist.prefetchSegments = hlsPlaylist.prefetchSegments.map(makeInternalSegments);
 
     return hlsPlaylist;
 }
 
-async function handleHLSPlaylist(streamInfo, req, res) {
+async function handleHlsPlaylist(streamInfo, req, res) {
     let hlsPlaylist = await req.body.text();
     hlsPlaylist = HLS.parse(hlsPlaylist);
 
     // NOTE no processing module is passing the master playlist
     assert(!hlsPlaylist.isMasterPlaylist);
 
-    hlsPlaylist = transformHLSMediaPlaylist(streamInfo, hlsPlaylist);
+    hlsPlaylist = transformHlsMediaPlaylist(streamInfo, hlsPlaylist);
     hlsPlaylist = HLS.stringify(hlsPlaylist);
 
     res.write(hlsPlaylist);
     res.end();
 }
 
+const HLS_MIME_TYPES = ["application/vnd.apple.mpegurl", "audio/mpegurl", "application/x-mpegURL"];
+
 export async function internalStream(streamInfo, res) {
     if (streamInfo.service === 'youtube') {
         return handleYoutubeStream(streamInfo, res);
@@ -129,8 +129,8 @@ export async function internalStream(streamInfo, res) {
         if (req.statusCode < 200 || req.statusCode > 299)
             return res.end();
 
-        if (["application/vnd.apple.mpegurl", "audio/mpegurl"].includes(req.headers['content-type'])) {
-            await handleHLSPlaylist(streamInfo, req, res);
+        if (HLS_MIME_TYPES.includes(req.headers['content-type'])) {
+            await handleHlsPlaylist(streamInfo, req, res);
         } else {
             req.body.pipe(res);
             req.body.on('error', () => res.end());