@@ -507,7 +507,7 @@ The EVP_MAC_init_SKEY() function was added in OpenSSL 3.5.
 
 Since OpenSSL 4.2, EVP_MAC_update(), EVP_MAC_final() and EVP_MAC_finalXOF()
 fail on a context that has not been initialised, or that has been finalised
-and not re-initialised since.
+and not re-initialised since. Previously results of such calls were undefined.
 
 =head1 COPYRIGHT