diff --git a/gtests/net/packetdrill/packet_to_string_test.c b/gtests/net/packetdrill/packet_to_string_test.c
index 8392b65e97c227b988068f43cd1f456225891da8..88f289c8c8196fc04b5631e67d9dafb023967bc2 100644
--- a/gtests/net/packetdrill/packet_to_string_test.c
+++ b/gtests/net/packetdrill/packet_to_string_test.c
@@ -291,7 +291,7 @@ static void test_sctp_ipv6_packet_to_string(void)
 		      "STALE_COOKIE_ERROR[staleness=65536], "
 		      "OUT_OF_RESOURCES[], "
 		      "UNRESOLVABLE_ADDRESS[param=HOSTNAME_ADDRESS[addr=\"@A\"]], "
-		      "UNRECOGNIZED_CHUNK[chk="
+		      "UNRECOGNIZED_CHUNK_TYPE[chk="
 			"CHUNK[type=0xfe, flgs=0x05, value=[0x01]]], "
 		      "INVALID_MANDATORY_PARAMETER[], "
 		      "UNRECOGNIZED_PARAMETERS["
@@ -349,7 +349,7 @@ static void test_sctp_ipv6_packet_to_string(void)
 		      "STALE_COOKIE_ERROR[staleness=65536], "
 		      "OUT_OF_RESOURCES[], "
 		      "UNRESOLVABLE_ADDRESS[param=HOSTNAME_ADDRESS[addr=\"@A\"]], "
-		      "UNRECOGNIZED_CHUNK[chk="
+		      "UNRECOGNIZED_CHUNK_TYPE[chk="
 			"CHUNK[type=0xfe, flgs=0x05, value=[0x01]]], "
 		      "INVALID_MANDATORY_PARAMETER[], "
 		      "UNRECOGNIZED_PARAMETERS["
@@ -407,7 +407,7 @@ static void test_sctp_ipv6_packet_to_string(void)
 		      "STALE_COOKIE_ERROR[staleness=65536], "
 		      "OUT_OF_RESOURCES[], "
 		      "UNRESOLVABLE_ADDRESS[param=HOSTNAME_ADDRESS[addr=\"@A\"]], "
-		      "UNRECOGNIZED_CHUNK[chk="
+		      "UNRECOGNIZED_CHUNK_TYPE[chk="
 			"CHUNK[type=0xfe, flgs=0x05, value=[0x01]]], "
 		      "INVALID_MANDATORY_PARAMETER[], "
 		      "UNRECOGNIZED_PARAMETERS["
diff --git a/gtests/net/packetdrill/sctp_chunk_to_string.c b/gtests/net/packetdrill/sctp_chunk_to_string.c
index 007581c42bcf91b89313fd72a3388f9ec8e6b7a8..ab647ae7de6e5d3307cc4a937aa8288be64404ae 100644
--- a/gtests/net/packetdrill/sctp_chunk_to_string.c
+++ b/gtests/net/packetdrill/sctp_chunk_to_string.c
@@ -758,7 +758,7 @@ static int sctp_unrecognized_chunk_type_cause_to_string(
 	cause_length = ntohs(cause->length);
 	if (cause_length < sizeof(struct sctp_unrecognized_chunk_type_cause) +
 			   sizeof(struct sctp_chunk)) {
-		asprintf(error, "UNRECOGNIZED_CHUNK cause too short");
+		asprintf(error, "UNRECOGNIZED_CHUNK_TYPE cause too short");
 		return STATUS_ERR;
 	}
 	cause_padding = cause_length & 0x0003;
@@ -773,10 +773,10 @@ static int sctp_unrecognized_chunk_type_cause_to_string(
 	if (cause_length + cause_padding !=
 	    sizeof(struct sctp_unrecognized_chunk_type_cause) +
 	    chunk_length + chunk_padding) {
-		asprintf(error, "UNRECOGNIZED_CHUNK cause inconsistent");
+		asprintf(error, "UNRECOGNIZED_CHUNK_TYPE cause inconsistent");
 		return STATUS_ERR;
 	}
-	fputs("UNRECOGNIZED_CHUNK[chk=", s);
+	fputs("UNRECOGNIZED_CHUNK_TYPE[chk=", s);
 	result = sctp_chunk_to_string(s, chunk, error);
 	fputc(']', s);
 	return result;