diff --git a/quiche/quic/platform/api/quic_mutex.h b/quiche/quic/platform/api/quic_mutex.h
index 6bf90db..ac42b5a 100644
--- a/quiche/quic/platform/api/quic_mutex.h
+++ b/quiche/quic/platform/api/quic_mutex.h
@@ -10,10 +10,8 @@
 #include "quiche/common/platform/api/quiche_mutex.h"
 
 #define QUIC_EXCLUSIVE_LOCKS_REQUIRED QUICHE_EXCLUSIVE_LOCKS_REQUIRED
-#define QUICHE_GUARDED_BY QUICHE_GUARDED_BY
 #define QUIC_LOCKABLE QUICHE_LOCKABLE
 #define QUIC_LOCKS_EXCLUDED QUICHE_LOCKS_EXCLUDED
-#define QUICHE_SHARED_LOCKS_REQUIRED QUICHE_SHARED_LOCKS_REQUIRED
 #define QUIC_EXCLUSIVE_LOCK_FUNCTION QUICHE_EXCLUSIVE_LOCK_FUNCTION
 #define QUIC_UNLOCK_FUNCTION QUICHE_UNLOCK_FUNCTION
 #define QUIC_SHARED_LOCK_FUNCTION QUICHE_SHARED_LOCK_FUNCTION
@@ -23,7 +21,6 @@
 namespace quic {
 
 using QuicMutex = quiche::QuicheMutex;
-using quiche::QuicheReaderMutexLock = quiche::QuicheReaderMutexLock;
 using QuicWriterMutexLock = quiche::QuicheWriterMutexLock;
 using QuicNotification = quiche::QuicheNotification;