diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index fb81287..79a652e 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -412,20 +412,20 @@
 
         if( verify )
         {
-            mbedtls_ssl_set_authmode( &conf, MBEDTLS_SSL_VERIFY_REQUIRED );
-            mbedtls_ssl_set_ca_chain( &conf, &cacert, NULL );
-            mbedtls_ssl_set_verify( &conf, my_verify, NULL );
+            mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_REQUIRED );
+            mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
+            mbedtls_ssl_conf_verify( &conf, my_verify, NULL );
         }
         else
-            mbedtls_ssl_set_authmode( &conf, MBEDTLS_SSL_VERIFY_NONE );
+            mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_NONE );
 
-        mbedtls_ssl_set_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
-        mbedtls_ssl_set_dbg( &conf, my_debug, stdout );
+        mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
+        mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
         mbedtls_ssl_set_bio( &ssl, &server_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
 
-        if( ( ret = mbedtls_ssl_set_own_cert( &conf, &clicert, &pkey ) ) != 0 )
+        if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &clicert, &pkey ) ) != 0 )
         {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_set_own_cert returned %d\n\n", ret );
+            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
             goto ssl_exit;
         }