diff --git a/quic/core/crypto/quic_decrypter.cc b/quic/core/crypto/quic_decrypter.cc
index 33c563f..c424901 100644
--- a/quic/core/crypto/quic_decrypter.cc
+++ b/quic/core/crypto/quic_decrypter.cc
@@ -18,6 +18,7 @@
 #include "net/third_party/quiche/src/quic/core/crypto/quic_hkdf.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_bug_tracker.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_logging.h"
+#include "net/third_party/quiche/src/common/platform/api/quiche_string_piece.h"
 
 namespace quic {
 
@@ -61,15 +62,16 @@
 }
 
 // static
-void QuicDecrypter::DiversifyPreliminaryKey(QuicStringPiece preliminary_key,
-                                            QuicStringPiece nonce_prefix,
-                                            const DiversificationNonce& nonce,
-                                            size_t key_size,
-                                            size_t nonce_prefix_size,
-                                            std::string* out_key,
-                                            std::string* out_nonce_prefix) {
+void QuicDecrypter::DiversifyPreliminaryKey(
+    quiche::QuicheStringPiece preliminary_key,
+    quiche::QuicheStringPiece nonce_prefix,
+    const DiversificationNonce& nonce,
+    size_t key_size,
+    size_t nonce_prefix_size,
+    std::string* out_key,
+    std::string* out_nonce_prefix) {
   QuicHKDF hkdf((std::string(preliminary_key)) + (std::string(nonce_prefix)),
-                QuicStringPiece(nonce.data(), nonce.size()),
+                quiche::QuicheStringPiece(nonce.data(), nonce.size()),
                 "QUIC key diversification", 0, key_size, 0, nonce_prefix_size,
                 0);
   *out_key = std::string(hkdf.server_write_key());