diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index e7a4aef..44814b9 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -2748,7 +2748,8 @@
     MBEDTLS_SSL_DEBUG_MSG(3,
                           ("ticket_lifetime: %u",
                            (unsigned int) session->ticket_lifetime));
-    if (session->ticket_lifetime > 604800) {
+    if (session->ticket_lifetime >
+        MBEDTLS_SSL_TLS1_3_MAX_ALLOWED_TICKET_LIFETIME) {
         MBEDTLS_SSL_DEBUG_MSG(3, ("ticket_lifetime exceeds 7 days."));
         return MBEDTLS_ERR_SSL_ILLEGAL_PARAMETER;
     }