diff --git a/lib/media/drm_engine.js b/lib/media/drm_engine.js
index 05971e08ac3..c7549b186bf 100644
--- a/lib/media/drm_engine.js
+++ b/lib/media/drm_engine.js
@@ -480,8 +480,10 @@ shaka.media.DrmEngine = class {
           () => this.closeOpenSessions_());
     }
 
-    const manifestInitData = this.currentDrmInfo_.initData.find(
-        (initDataOverride) => initDataOverride.initData.length > 0);
+    const manifestInitData = this.currentDrmInfo_ ?
+      this.currentDrmInfo_.initData.find(
+          (initDataOverride) => initDataOverride.initData.length > 0,
+      ) : null;
 
     /**
      * We can attach media keys before the playback actually begins when: