diff --git a/lib/player.js b/lib/player.js
index ad11b9e76d..ad84c85dab 100644
--- a/lib/player.js
+++ b/lib/player.js
@@ -1511,7 +1511,7 @@ shaka.Player = class extends shaka.util.FakeEventTarget {
       // after several playbacks, and they are not able anymore to properly
       // create MediaKeys objects. To prevent it, clear the cache after
       // each playback.
-      if (this.config_.streaming.clearDecodingCache) {
+      if (this.config_ && this.config_.streaming.clearDecodingCache) {
         shaka.util.StreamUtils.clearDecodingConfigCache();
         shaka.util.DrmUtils.clearMediaKeySystemAccessMap();
       }