diff --git a/lib/media/eme_manager.js b/lib/media/eme_manager.js
index d475655d07..5851490c4d 100644
--- a/lib/media/eme_manager.js
+++ b/lib/media/eme_manager.js
@@ -339,10 +339,10 @@ shaka.media.EmeManager.prototype.buildKeySystemPromiseChain_ =
     function(mediaKeySystemConfigs, p) {
   for (var keySystem in mediaKeySystemConfigs) {
     var mksc = mediaKeySystemConfigs[keySystem];
-    p = p.catch(function() {
+    p = p.catch(function(keySystem, mksc) {
       // If the prior promise was rejected, try the next key system in the list.
       return navigator.requestMediaKeySystemAccess(keySystem, [mksc]);
-    });
+    }.bind(null, keySystem, mksc));
   }
   if (this.videoSource_.isOffline()) {
     p = p.catch(function() {