diff --git a/quiche/quic/core/quic_session.cc b/quiche/quic/core/quic_session.cc
index 6665e26..b94250f 100644
--- a/quiche/quic/core/quic_session.cc
+++ b/quiche/quic/core/quic_session.cc
@@ -1803,8 +1803,6 @@
   write_blocked_streams()->UpdateStreamPriority(id, new_precedence);
 }
 
-QuicConfig* QuicSession::config() { return &config_; }
-
 void QuicSession::ActivateStream(std::unique_ptr<QuicStream> stream) {
   QuicStreamId stream_id = stream->id();
   bool is_static = stream->is_static();
diff --git a/quiche/quic/core/quic_session.h b/quiche/quic/core/quic_session.h
index 85d49e8..87509a7 100644
--- a/quiche/quic/core/quic_session.h
+++ b/quiche/quic/core/quic_session.h
@@ -360,7 +360,8 @@
 
   // Returns mutable config for this session. Returned config is owned
   // by QuicSession.
-  QuicConfig* config();
+  QuicConfig* config() { return &config_; }
+  const QuicConfig* config() const { return &config_; }
 
   // Returns true if the stream existed previously and has been closed.
   // Returns false if the stream is still active or if the stream has