diff --git a/quic/core/quic_utils.cc b/quic/core/quic_utils.cc
index 297cc8b..a6f6577 100644
--- a/quic/core/quic_utils.cc
+++ b/quic/core/quic_utils.cc
@@ -165,6 +165,7 @@
     RETURN_STRING_LITERAL(LOST);
     RETURN_STRING_LITERAL(TLP_RETRANSMITTED);
     RETURN_STRING_LITERAL(RTO_RETRANSMITTED);
+    RETURN_STRING_LITERAL(PTO_RETRANSMITTED);
     RETURN_STRING_LITERAL(PROBE_RETRANSMITTED);
   }
   return "INVALID_SENT_PACKET_STATE";
@@ -329,6 +330,8 @@
       return TLP_RETRANSMITTED;
     case RTO_RETRANSMISSION:
       return RTO_RETRANSMITTED;
+    case PTO_RETRANSMISSION:
+      return PTO_RETRANSMITTED;
     case PROBING_RETRANSMISSION:
       return PROBE_RETRANSMITTED;
     default: