diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 254627f..af3aa5d 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -947,7 +947,7 @@
  *   and indicates the length of the static part of the IV which is
  *   constant throughout the communication, and which is stored in
  *   the first fixed_ivlen bytes of the iv_{enc/dec} arrays.
- * - minor_ver denotes the SSL/TLS version
+ * - tls_version denotes the 2-byte TLS version
  * - For stream/CBC transformations, maclen denotes the length of the
  *   authentication tag, while taglen is unused and 0.
  * - For AEAD transformations, taglen denotes the length of the
@@ -988,7 +988,7 @@
 
 #endif /* MBEDTLS_SSL_SOME_SUITES_USE_MAC */
 
-    int minor_ver;
+    mbedtls_ssl_protocol_version tls_version;
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     mbedtls_svc_key_id_t psa_key_enc;           /*!<  psa encryption key      */
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 4eac24b..8053e76 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -382,7 +382,8 @@
 static void ssl_extract_add_data_from_record( unsigned char* add_data,
                                               size_t *add_data_len,
                                               mbedtls_record *rec,
-                                              unsigned minor_ver,
+                                              mbedtls_ssl_protocol_version
+                                                tls_version,
                                               size_t taglen )
 {
     /* Quoting RFC 5246 (TLS 1.2):
@@ -421,7 +422,7 @@
     size_t ad_len_field = rec->data_len;
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-    if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
+    if( tls_version == MBEDTLS_SSL_VERSION_TLS1_3 )
     {
         /* In TLS 1.3, the AAD contains the length of the TLSCiphertext,
          * which differs from the length of the TLSInnerPlaintext
@@ -431,7 +432,7 @@
     else
 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
     {
-        ((void) minor_ver);
+        ((void) tls_version);
         ((void) taglen);
         memcpy( cur, rec->ctr, sizeof( rec->ctr ) );
         cur += sizeof( rec->ctr );
@@ -596,7 +597,7 @@
      * is hence no risk of double-addition of the inner plaintext.
      */
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-    if( transform->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
+    if( transform->tls_version == MBEDTLS_SSL_VERSION_TLS1_3 )
     {
         size_t padding =
             ssl_compute_padding_length( rec->data_len,
@@ -680,7 +681,7 @@
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
         ssl_extract_add_data_from_record( add_data, &add_data_len, rec,
-                                          transform->minor_ver,
+                                          transform->tls_version,
                                           transform->taglen );
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
@@ -817,7 +818,7 @@
          * This depends on the TLS version.
          */
         ssl_extract_add_data_from_record( add_data, &add_data_len, rec,
-                                          transform->minor_ver,
+                                          transform->tls_version,
                                           transform->taglen );
 
         MBEDTLS_SSL_DEBUG_BUF( 4, "IV used (internal)",
@@ -1050,7 +1051,7 @@
             }
 
             ssl_extract_add_data_from_record( add_data, &add_data_len,
-                                              rec, transform->minor_ver,
+                                              rec, transform->tls_version,
                                               transform->taglen );
 
             MBEDTLS_SSL_DEBUG_MSG( 3, ( "using encrypt then mac" ) );
@@ -1270,7 +1271,7 @@
          * This depends on the TLS version.
          */
         ssl_extract_add_data_from_record( add_data, &add_data_len, rec,
-                                          transform->minor_ver,
+                                          transform->tls_version,
                                           transform->taglen );
         MBEDTLS_SSL_DEBUG_BUF( 4, "additional data used for AEAD",
                                add_data, add_data_len );
@@ -1412,7 +1413,7 @@
              * Further, we still know that data_len > minlen */
             rec->data_len -= transform->maclen;
             ssl_extract_add_data_from_record( add_data, &add_data_len, rec,
-                                              transform->minor_ver,
+                                              transform->tls_version,
                                               transform->taglen );
 
             /* Calculate expected MAC. */
@@ -1697,7 +1698,7 @@
          */
         rec->data_len -= transform->maclen;
         ssl_extract_add_data_from_record( add_data, &add_data_len, rec,
-                                          transform->minor_ver,
+                                          transform->tls_version,
                                           transform->taglen );
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
@@ -1775,7 +1776,7 @@
     }
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-    if( transform->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
+    if( transform->tls_version == MBEDTLS_SSL_VERSION_TLS1_3 )
     {
         /* Remove inner padding and infer true content type. */
         ret = ssl_parse_inner_plaintext( data, &rec->data_len,
@@ -3692,7 +3693,7 @@
      */
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if( ssl->transform_in != NULL &&
-        ssl->transform_in->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
+        ssl->transform_in->tls_version == MBEDTLS_SSL_VERSION_TLS1_3 )
     {
         if( rec->type == MBEDTLS_SSL_MSG_CHANGE_CIPHER_SPEC )
             done = 1;
@@ -4967,7 +4968,8 @@
 static size_t ssl_transform_get_explicit_iv_len(
                         mbedtls_ssl_transform const *transform )
 {
-    if( transform->minor_ver < MBEDTLS_SSL_MINOR_VERSION_3 )
+    /* XXX: obsolete test? (earlier vers no longer supported?) */
+    if( transform->tls_version < MBEDTLS_SSL_VERSION_TLS1_2 )
         return( 0 );
 
     return( transform->ivlen - transform->fixed_ivlen );
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 63442eb..1fdc1f3 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -390,7 +390,7 @@
           MBEDTLS_SSL_SOME_SUITES_USE_MAC */
                                    ssl_tls_prf_t tls_prf,
                                    const unsigned char randbytes[64],
-                                   int minor_ver,
+                                   mbedtls_ssl_protocol_version tls_version,
                                    unsigned endpoint,
                                    const mbedtls_ssl_context *ssl );
 
@@ -3660,7 +3660,7 @@
           MBEDTLS_SSL_SOME_SUITES_USE_MAC */
                   ssl_tls12prf_from_cs( ssl->session->ciphersuite ),
                   p, /* currently pointing to randbytes */
-                  MBEDTLS_SSL_MINOR_VERSION_3, /* (D)TLS 1.2 is forced */
+                  MBEDTLS_SSL_VERSION_TLS1_2, /* (D)TLS 1.2 is forced */
                   ssl->conf->endpoint,
                   ssl );
     if( ret != 0 )
@@ -5253,7 +5253,9 @@
           MBEDTLS_SSL_SOME_SUITES_USE_MAC */
                                         ssl->handshake->tls_prf,
                                         ssl->handshake->randbytes,
-                                        ssl->minor_ver,
+                                        ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4
+                                          ? MBEDTLS_SSL_VERSION_TLS1_3
+                                          : MBEDTLS_SSL_VERSION_TLS1_2,
                                         ssl->conf->endpoint,
                                         ssl );
     if( ret != 0 )
@@ -6826,7 +6828,7 @@
  * - [in] compression
  * - [in] tls_prf: pointer to PRF to use for key derivation
  * - [in] randbytes: buffer holding ServerHello.random + ClientHello.random
- * - [in] minor_ver: SSL/TLS minor version
+ * - [in] tls_version: TLS version
  * - [in] endpoint: client or server
  * - [in] ssl: used for:
  *        - ssl->conf->{f,p}_export_keys
@@ -6843,7 +6845,7 @@
           MBEDTLS_SSL_SOME_SUITES_USE_MAC */
                                    ssl_tls_prf_t tls_prf,
                                    const unsigned char randbytes[64],
-                                   int minor_ver,
+                                   mbedtls_ssl_protocol_version tls_version,
                                    unsigned endpoint,
                                    const mbedtls_ssl_context *ssl )
 {
@@ -6887,14 +6889,14 @@
     defined(MBEDTLS_SSL_SOME_SUITES_USE_MAC)
     transform->encrypt_then_mac = encrypt_then_mac;
 #endif
-    transform->minor_ver = minor_ver;
+    transform->tls_version = tls_version;
 
 #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
     memcpy( transform->randbytes, randbytes, sizeof( transform->randbytes ) );
 #endif
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-    if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
+    if( tls_version == MBEDTLS_SSL_VERSION_TLS1_3 )
     {
         /* At the moment, we keep TLS <= 1.2 and TLS 1.3 transform
          * generation separate. This should never happen. */
@@ -7064,7 +7066,7 @@
                                   - transform->maclen % cipher_info->block_size;
             }
 
-            if( minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
+            if( tls_version == MBEDTLS_SSL_VERSION_TLS1_2 )
             {
                 transform->minlen += transform->ivlen;
             }
diff --git a/library/ssl_tls13_keys.c b/library/ssl_tls13_keys.c
index d7deaba..6559bc9 100644
--- a/library/ssl_tls13_keys.c
+++ b/library/ssl_tls13_keys.c
@@ -1106,7 +1106,7 @@
     transform->ivlen       = traffic_keys->iv_len;
     transform->maclen      = 0;
     transform->fixed_ivlen = transform->ivlen;
-    transform->minor_ver   = MBEDTLS_SSL_MINOR_VERSION_4;
+    transform->tls_version = MBEDTLS_SSL_VERSION_TLS1_3;
 
     /* We add the true record content type (1 Byte) to the plaintext and
      * then pad to the configured granularity. The mimimum length of the
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 692efbe..0ba501d 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -1261,7 +1261,8 @@
 static int build_transforms( mbedtls_ssl_transform *t_in,
                              mbedtls_ssl_transform *t_out,
                              int cipher_type, int hash_id,
-                             int etm, int tag_mode, int ver,
+                             int etm, int tag_mode,
+                             mbedtls_ssl_protocol_version tls_version,
                              size_t cid0_len,
                              size_t cid1_len )
 {
@@ -1438,8 +1439,8 @@
     ((void) etm);
 #endif
 
-    t_out->minor_ver = ver;
-    t_in->minor_ver = ver;
+    t_out->tls_version = tls_version;
+    t_in->tls_version = tls_version;
     t_out->ivlen = ivlen;
     t_in->ivlen = ivlen;
 
@@ -1448,7 +1449,7 @@
         case MBEDTLS_MODE_GCM:
         case MBEDTLS_MODE_CCM:
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-            if( ver == MBEDTLS_SSL_MINOR_VERSION_4 )
+            if( tls_version == MBEDTLS_SSL_VERSION_TLS1_3 )
             {
                 t_out->fixed_ivlen = 12;
                 t_in->fixed_ivlen  = 12;
@@ -3425,6 +3426,7 @@
 
     USE_PSA_INIT( );
 
+    ver |= 0x0300; /*(or substitute in tests)*/
     mbedtls_ssl_init( &ssl );
     mbedtls_ssl_transform_init( &t0 );
     mbedtls_ssl_transform_init( &t1 );
@@ -3504,7 +3506,7 @@
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-        if( t_enc->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
+        if( t_enc->tls_version == MBEDTLS_SSL_VERSION_TLS1_3 )
         {
             /* TLS 1.3 hides the real content type and
              * always uses Application Data as the content type
@@ -3586,6 +3588,7 @@
 
     USE_PSA_INIT( );
 
+    ver |= 0x0300; /*(or substitute in tests)*/
     mbedtls_ssl_init( &ssl );
     mbedtls_ssl_transform_init( &t0 );
     mbedtls_ssl_transform_init( &t1 );
@@ -3673,7 +3676,7 @@
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-            if( t_enc->minor_ver == MBEDTLS_SSL_MINOR_VERSION_4 )
+            if( t_enc->tls_version == MBEDTLS_SSL_VERSION_TLS1_3 )
             {
                 /* TLS 1.3 hides the real content type and
                  * always uses Application Data as the content type
@@ -3758,7 +3761,7 @@
     /* Set up transforms with dummy keys */
     ret = build_transforms( &t0, &t1, cipher_type, hash_id,
                                    0, trunc_hmac,
-                                   MBEDTLS_SSL_MINOR_VERSION_3,
+                                   MBEDTLS_SSL_VERSION_TLS1_2,
                                    0 , 0 );
 
     TEST_ASSERT( ret == 0 );