diff --git a/tests/src/test_helpers/ssl_helpers.c b/tests/src/test_helpers/ssl_helpers.c
index 54b57be81..f7cd1030f 100644
--- a/tests/src/test_helpers/ssl_helpers.c
+++ b/tests/src/test_helpers/ssl_helpers.c
@@ -1633,6 +1633,7 @@ exit:
 }
 #endif /* MBEDTLS_SSL_SOME_SUITES_USE_MAC */
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
 int mbedtls_test_ssl_tls12_populate_session(mbedtls_ssl_session *session,
                                             int ticket_len,
                                             const char *crt_file)
@@ -1729,6 +1730,7 @@ int mbedtls_test_ssl_tls12_populate_session(mbedtls_ssl_session *session,
 
     return 0;
 }
+#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
 int mbedtls_test_ssl_tls13_populate_session(mbedtls_ssl_session *session,
@@ -1752,14 +1754,14 @@ int mbedtls_test_ssl_tls13_populate_session(mbedtls_ssl_session *session,
 
 #if defined(MBEDTLS_HAVE_TIME)
     if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
-        session->start = mbedtls_time(NULL) - 42;
+        session->ticket_creation = mbedtls_ms_time() - 42;
     }
 #endif
 
 #if defined(MBEDTLS_SSL_CLI_C)
     if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
 #if defined(MBEDTLS_HAVE_TIME)
-        session->ticket_received = mbedtls_time(NULL) - 40;
+        session->ticket_received = mbedtls_ms_time() - 40;
 #endif
         session->ticket_lifetime = 0xfedcba98;
 
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 7cdf17eb6..4f9ec1a06 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -1943,16 +1943,21 @@ void ssl_serialize_session_save_load(int ticket_len, char *crt_file,
     /* Prepare a dummy session to work on */
     ((void) endpoint_type);
     ((void) tls_version);
+    ((void) ticket_len);
+    ((void) crt_file);
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if (tls_version == MBEDTLS_SSL_VERSION_TLS1_3) {
         TEST_ASSERT(mbedtls_test_ssl_tls13_populate_session(
                         &original, 0, endpoint_type) == 0);
-    } else
+    }
 #endif
-    {
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
+    if (tls_version == MBEDTLS_SSL_VERSION_TLS1_2) {
         TEST_ASSERT(mbedtls_test_ssl_tls12_populate_session(
                         &original, ticket_len, crt_file) == 0);
     }
+#endif
 
     /* Serialize it */
     TEST_ASSERT(mbedtls_ssl_session_save(&original, NULL, 0, &len)
@@ -1968,8 +1973,20 @@ void ssl_serialize_session_save_load(int ticket_len, char *crt_file,
      * Make sure both session structures are identical
      */
 #if defined(MBEDTLS_HAVE_TIME)
-    TEST_ASSERT(original.start == restored.start);
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+    if (tls_version == MBEDTLS_SSL_VERSION_TLS1_3) {
+        TEST_ASSERT(original.ticket_creation == restored.ticket_creation);
+    }
 #endif
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
+    if (tls_version == MBEDTLS_SSL_VERSION_TLS1_2) {
+        TEST_ASSERT(original.start == restored.start);
+    }
+#endif
+
+#endif
+
     TEST_ASSERT(original.tls_version == restored.tls_version);
     TEST_ASSERT(original.ciphersuite == restored.ciphersuite);
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
@@ -2049,7 +2066,7 @@ void ssl_serialize_session_save_load(int ticket_len, char *crt_file,
 
 #if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
         if (endpoint_type == MBEDTLS_SSL_IS_SERVER) {
-            TEST_ASSERT(original.start == restored.start);
+            TEST_ASSERT(original.ticket_creation == restored.ticket_creation);
         }
 #endif
 #if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
@@ -2097,16 +2114,22 @@ void ssl_serialize_session_load_save(int ticket_len, char *crt_file,
     /* Prepare a dummy session to work on */
     ((void) endpoint_type);
     ((void) tls_version);
+    ((void) ticket_len);
+    ((void) crt_file);
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if (tls_version == MBEDTLS_SSL_VERSION_TLS1_3) {
         TEST_ASSERT(mbedtls_test_ssl_tls13_populate_session(
                         &session, 0, endpoint_type) == 0);
-    } else
+    }
 #endif
-    {
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
+    if (tls_version == MBEDTLS_SSL_VERSION_TLS1_2) {
+
         TEST_ASSERT(mbedtls_test_ssl_tls12_populate_session(
                         &session, ticket_len, crt_file) == 0);
     }
+#endif
 
     /* Get desired buffer size for serializing */
     TEST_ASSERT(mbedtls_ssl_session_save(&session, NULL, 0, &len0)
@@ -2160,16 +2183,22 @@ void ssl_serialize_session_save_buf_size(int ticket_len, char *crt_file,
     /* Prepare dummy session and get serialized size */
     ((void) endpoint_type);
     ((void) tls_version);
+    ((void) ticket_len);
+    ((void) crt_file);
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if (tls_version == MBEDTLS_SSL_VERSION_TLS1_3) {
         TEST_ASSERT(mbedtls_test_ssl_tls13_populate_session(
                         &session, 0, endpoint_type) == 0);
-    } else
+    }
 #endif
-    {
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
+    if (tls_version == MBEDTLS_SSL_VERSION_TLS1_2) {
         TEST_ASSERT(mbedtls_test_ssl_tls12_populate_session(
                         &session, ticket_len, crt_file) == 0);
     }
+#endif
+
     TEST_ASSERT(mbedtls_ssl_session_save(&session, NULL, 0, &good_len)
                 == MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL);
 
@@ -2209,16 +2238,22 @@ void ssl_serialize_session_load_buf_size(int ticket_len, char *crt_file,
     /* Prepare serialized session data */
     ((void) endpoint_type);
     ((void) tls_version);
+    ((void) ticket_len);
+    ((void) crt_file);
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
     if (tls_version == MBEDTLS_SSL_VERSION_TLS1_3) {
         TEST_ASSERT(mbedtls_test_ssl_tls13_populate_session(
                         &session, 0, endpoint_type) == 0);
-    } else
+    }
 #endif
-    {
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
+    if (tls_version == MBEDTLS_SSL_VERSION_TLS1_2) {
         TEST_ASSERT(mbedtls_test_ssl_tls12_populate_session(
                         &session, ticket_len, crt_file) == 0);
     }
+#endif
+
     TEST_ASSERT(mbedtls_ssl_session_save(&session, NULL, 0, &good_len)
                 == MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL);
     TEST_CALLOC(good_buf, good_len);
@@ -2272,11 +2307,15 @@ void ssl_session_serialize_version_check(int corrupt_major,
     if (tls_version == MBEDTLS_SSL_VERSION_TLS1_3) {
         TEST_ASSERT(mbedtls_test_ssl_tls13_populate_session(
                         &session, 0, endpoint_type) == 0);
-    } else
+    }
 #endif
-    TEST_ASSERT(mbedtls_test_ssl_tls12_populate_session(
-                    &session, 0, NULL) == 0);
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_2)
+    if (tls_version == MBEDTLS_SSL_VERSION_TLS1_2) {
+        TEST_ASSERT(mbedtls_test_ssl_tls12_populate_session(
+                        &session, 0, NULL) == 0);
+    }
+#endif
 
     /* Infer length of serialized session. */
     TEST_ASSERT(mbedtls_ssl_session_save(&session,