diff --git a/quic/core/crypto/crypto_protocol.h b/quic/core/crypto/crypto_protocol.h
index c48aaa8..d594f48 100644
--- a/quic/core/crypto/crypto_protocol.h
+++ b/quic/core/crypto/crypto_protocol.h
@@ -412,9 +412,6 @@
                                                  // wire PING (ROWP) on the
                                                  // server side.
 
-// Client Hints triggers.
-const QuicTag kYTCH = TAG('Y', 'T', 'C', 'H');
-
 // Rejection tags
 const QuicTag kRREJ = TAG('R', 'R', 'E', 'J');   // Reasons for server sending