diff -up ./nss/lib/util/pkcs11t.h.tls12_mechs ./nss/lib/util/pkcs11t.h
--- ./nss/lib/util/pkcs11t.h.tls12_mechs	2015-11-08 21:12:59.000000000 -0800
+++ ./nss/lib/util/pkcs11t.h	2016-02-02 07:27:51.243330963 -0800
@@ -1695,6 +1695,10 @@ typedef struct CK_TLS_MAC_PARAMS {
 
 typedef CK_TLS_MAC_PARAMS CK_PTR CK_TLS_MAC_PARAMS_PTR;
 
+/* aliases for compatibility with prior release */
+#define CK_TLS12_MAC_PARAMS CK_TLS_MAC_PARAMS
+#define CK_TLS12_MAC_PARAMS_PTR CK_TLS_MAC_PARAMS_PTR
+
 /* WTLS is new for version 2.20 */
 typedef struct CK_WTLS_RANDOM_DATA {
   CK_BYTE_PTR pClientRandom;