diff --git a/lib/player.js b/lib/player.js
index 27b86302fd..4dd4b95152 100644
--- a/lib/player.js
+++ b/lib/player.js
@@ -2003,7 +2003,7 @@ shaka.Player = class extends shaka.util.FakeEventTarget {
 
     this.drmEngine_.configure(this.config_.drm);
 
-    const uri = has.uri || '';
+    const uri = wants.uri || '';
     const extension = shaka.media.ManifestParser.getExtension(uri);
     let mimeType = shaka.Player.SRC_EQUAL_EXTENSIONS_TO_MIME_TYPES_[extension];
     if (mimeType == 'application/x-mpegurl' && shaka.util.Platform.isApple()) {