diff --git a/quic/core/quic_constants.h b/quic/core/quic_constants.h
index 913c063..e718602 100644
--- a/quic/core/quic_constants.h
+++ b/quic/core/quic_constants.h
@@ -74,9 +74,16 @@
 const QuicByteCount kStreamReceiveWindowLimit = 16 * 1024 * 1024;   // 16 MB
 const QuicByteCount kSessionReceiveWindowLimit = 24 * 1024 * 1024;  // 24 MB
 
-// Default limit on the size of uncompressed headers.
+// Default limit on the size of uncompressed headers,
+// communicated via SETTINGS_MAX_HEADER_LIST_SIZE.
+// TODO(bnc): Move this constant to quic/core/http/.
 const QuicByteCount kDefaultMaxUncompressedHeaderSize = 16 * 1024;  // 16 KB
 
+// Default maximum dynamic table capacity, communicated via
+// SETTINGS_QPACK_MAX_TABLE_CAPACITY.
+// TODO(bnc): Move this constant to quic/core/http/.
+const QuicByteCount kDefaultQpackMaxDynamicTableCapacity = 64 * 1024;  // 64 KB
+
 // Minimum size of the CWND, in packets, when doing bandwidth resumption.
 const QuicPacketCount kMinCongestionWindowForBandwidthResumption = 10;