diff --git a/quic/core/crypto/chacha_base_decrypter.cc b/quic/core/crypto/chacha_base_decrypter.cc
index e58fb1e..eb1e95f 100644
--- a/quic/core/crypto/chacha_base_decrypter.cc
+++ b/quic/core/crypto/chacha_base_decrypter.cc
@@ -8,6 +8,7 @@
 
 #include "third_party/boringssl/src/include/openssl/chacha.h"
 #include "net/third_party/quiche/src/quic/core/quic_data_reader.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_arraysize.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_bug_tracker.h"
 
 namespace quic {
@@ -32,9 +33,9 @@
   QuicDataReader(sample.data(), 4, Endianness::HOST_BYTE_ORDER)
       .ReadUInt32(&counter);
   const uint8_t zeroes[] = {0, 0, 0, 0, 0};
-  std::string out(arraysize(zeroes), 0);
+  std::string out(QUIC_ARRAYSIZE(zeroes), 0);
   CRYPTO_chacha_20(reinterpret_cast<uint8_t*>(const_cast<char*>(out.data())),
-                   zeroes, arraysize(zeroes), pne_key_, nonce, counter);
+                   zeroes, QUIC_ARRAYSIZE(zeroes), pne_key_, nonce, counter);
   return out;
 }
 
diff --git a/quic/core/crypto/chacha_base_encrypter.cc b/quic/core/crypto/chacha_base_encrypter.cc
index 24d79d5..04d902f 100644
--- a/quic/core/crypto/chacha_base_encrypter.cc
+++ b/quic/core/crypto/chacha_base_encrypter.cc
@@ -6,6 +6,7 @@
 
 #include "third_party/boringssl/src/include/openssl/chacha.h"
 #include "net/third_party/quiche/src/quic/core/quic_data_reader.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_arraysize.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_bug_tracker.h"
 
 namespace quic {
@@ -29,9 +30,9 @@
   QuicDataReader(sample.data(), 4, Endianness::HOST_BYTE_ORDER)
       .ReadUInt32(&counter);
   const uint8_t zeroes[] = {0, 0, 0, 0, 0};
-  std::string out(arraysize(zeroes), 0);
+  std::string out(QUIC_ARRAYSIZE(zeroes), 0);
   CRYPTO_chacha_20(reinterpret_cast<uint8_t*>(const_cast<char*>(out.data())),
-                   zeroes, arraysize(zeroes), pne_key_, nonce, counter);
+                   zeroes, QUIC_ARRAYSIZE(zeroes), pne_key_, nonce, counter);
   return out;
 }