diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 84cb04b..87fe4c9 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -1654,8 +1654,12 @@
         else if( minor_ver > mbedtls_ssl_conf_get_max_minor_ver( ssl->conf ) )
             minor_ver = mbedtls_ssl_conf_get_max_minor_ver( ssl->conf );
 
+#if !defined(MBEDTLS_SSL_CONF_FIXED_MAJOR_VER)
         ssl->major_ver = major_ver;
+#endif /* MBEDTLS_SSL_CONF_FIXED_MAJOR_VER */
+#if !defined(MBEDTLS_SSL_CONF_FIXED_MINOR_VER)
         ssl->minor_ver = minor_ver;
+#endif /* MBEDTLS_SSL_CONF_FIXED_MINOR_VER */
     }
 
     /*