diff --git a/media/base/media_channel.h b/media/base/media_channel.h
index 571d661d45..59a47034ce 100644
--- a/media/base/media_channel.h
+++ b/media/base/media_channel.h
@@ -1003,13 +1003,11 @@ class VideoMediaReceiveChannelInterface : public MediaReceiveChannelInterface {
 // DataMediaChannel::SignalDataReceived and in all of the signals that
 // signal fires, on up the chain.
 struct ReceiveDataParams {
-  // The in-packet stream indentifier.
+  // The in-packet stream identifier.
   // SCTP data channels use SIDs.
   int sid = 0;
   // The type of message (binary, text, or control).
   webrtc::DataMessageType type = webrtc::DataMessageType::kText;
-  // A per-stream value incremented per packet in the stream.
-  int seq_num = 0;
 };
 
 enum SendDataResult { SDR_SUCCESS, SDR_ERROR, SDR_BLOCK };
diff --git a/media/sctp/dcsctp_transport.cc b/media/sctp/dcsctp_transport.cc
index 062360d251..10eaa00948 100644
--- a/media/sctp/dcsctp_transport.cc
+++ b/media/sctp/dcsctp_transport.cc
@@ -463,8 +463,6 @@ void DcSctpTransport::OnMessageReceived(dcsctp::DcSctpMessage message) {
                         << " on an SCTP packet. Dropping.";
   }
   receive_data_params.type = *type;
-  // No seq_num available from dcSCTP
-  receive_data_params.seq_num = 0;
   receive_buffer_.Clear();
   if (!IsEmptyPPID(message.ppid()))
     receive_buffer_.AppendData(message.payload().data(),