diff --git a/src/demux/id3.ts b/src/demux/id3.ts
index 2bccba62a00..3e562df08ae 100644
--- a/src/demux/id3.ts
+++ b/src/demux/id3.ts
@@ -399,7 +399,7 @@ let decoder: TextDecoder;
 function getTextDecoder() {
   // On Play Station 4, TextDecoder is defined but partially implemented.
   // Manual decoding option is preferable
-  if (navigator.userAgent.includes('PlayStation 4')) {
+  if (navigator.userAgent.indexOf('PlayStation 4') > -1) {
     return;
   }