diff --git a/mpd/base/media_info.proto b/mpd/base/media_info.proto
index 3a7075b7a9..5ab1d21b4b 100644
--- a/mpd/base/media_info.proto
+++ b/mpd/base/media_info.proto
@@ -52,10 +52,14 @@ message MediaInfo {
     }
 
     message Element {
-      repeated AttributeNameValuePair attributes = 1;
-      repeated Element subelements = 2;
+      optional string name = 1;
+      repeated AttributeNameValuePair attributes = 2;
+      repeated Element subelements = 3;
     }
 
+    // These two string fields are specified by the MPD spec. Just for
+    // clarification, the string set in |value| is the rhs of 'value' field in
+    // <ContentProtection>.
     optional string scheme_id_uri = 1;
     optional string value = 2;
     repeated AttributeNameValuePair attributes = 3;