diff --git a/quic/quartc/quartc_multiplexer.cc b/quic/quartc/quartc_multiplexer.cc
index cb7d77c..3abc3cd 100644
--- a/quic/quartc/quartc_multiplexer.cc
+++ b/quic/quartc/quartc_multiplexer.cc
@@ -10,6 +10,7 @@
 #include "net/third_party/quiche/src/quic/core/quic_data_writer.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_mem_slice.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_mem_slice_span.h"
+#include "net/third_party/quiche/src/common/platform/api/quiche_string_piece.h"
 
 namespace quic {
 
@@ -176,7 +177,7 @@
   session_delegate_->OnConnectionClosed(frame, source);
 }
 
-void QuartcMultiplexer::OnMessageReceived(QuicStringPiece message) {
+void QuartcMultiplexer::OnMessageReceived(quiche::QuicheStringPiece message) {
   QuicDataReader reader(message);
   QuicVariableLengthIntegerLength channel_id_length =
       reader.PeekVarInt62Length();