diff --git a/src/js/plyr.js b/src/js/plyr.js
index cad45d66..600eeba3 100644
--- a/src/js/plyr.js
+++ b/src/js/plyr.js
@@ -958,7 +958,7 @@ class Plyr {
    */
   set currentTrack(input) {
     captions.set.call(this, input, false);
-    captions.setup();
+    captions.setup.call(this);
   }
 
   /**