diff --git a/lib/asn1/Makefile.am b/lib/asn1/Makefile.am
index fef55b32a..2bb083a08 100644
--- a/lib/asn1/Makefile.am
+++ b/lib/asn1/Makefile.am
@@ -359,6 +359,7 @@ gen_files_pkinit =					\
 	asn1_TrustedCA_Win2k.x				\
 	asn1_PA_PK_AS_REQ_Win2k.x			\
 	asn1_PA_PK_AS_REP_Win2k.x			\
+	asn1_PA_PK_AS_REP_BTMM.x			\
 	asn1_KDCDHKeyInfo_Win2k.x			\
 	asn1_ReplyKeyPack_Win2k.x			\
 	asn1_PkinitSP80056AOtherInfo.x			\
diff --git a/lib/asn1/pkinit.asn1 b/lib/asn1/pkinit.asn1
index 758af6f86..302b0c3e8 100644
--- a/lib/asn1/pkinit.asn1
+++ b/lib/asn1/pkinit.asn1
@@ -164,7 +164,6 @@ PA-PK-AS-REP-Win2k ::= CHOICE {
 	encKeyPack		[1] IMPLICIT OCTET STRING
 }
 
-
 KDCDHKeyInfo-Win2k ::= SEQUENCE {
 	nonce			[0] INTEGER (-2147483648..2147483647),
 	subjectPublicKey	[2] BIT STRING
@@ -176,6 +175,12 @@ ReplyKeyPack-Win2k ::= SEQUENCE {
 	...
 }
 
+PA-PK-AS-REP-BTMM ::= SEQUENCE {
+	dhSignedData		[0] heim_any OPTIONAL,
+	encKeyPack		[1] heim_any OPTIONAL
+}
+
+
 PkinitSP80056AOtherInfo ::= SEQUENCE { 
 	algorithmID   AlgorithmIdentifier, 
 	partyUInfo     [0] OCTET STRING,