diff --git a/programs/ssl/dtls_client.c b/programs/ssl/dtls_client.c
index 09cea3b..eb27f3c 100644
--- a/programs/ssl/dtls_client.c
+++ b/programs/ssl/dtls_client.c
@@ -181,11 +181,11 @@
     /* OPTIONAL is usually a bad choice for security, but makes interop easier
      * in this simplified example, in which the ca chain is hardcoded.
      * Production code should set a proper ca chain and use REQUIRED. */
-    mbedtls_ssl_set_authmode( &ssl, MBEDTLS_SSL_VERIFY_OPTIONAL );
+    mbedtls_ssl_set_authmode( &conf, MBEDTLS_SSL_VERIFY_OPTIONAL );
     mbedtls_ssl_set_ca_chain( &ssl, &cacert, NULL, SERVER_NAME );
 
     mbedtls_ssl_set_rng( &ssl, mbedtls_ctr_drbg_random, &ctr_drbg );
-    mbedtls_ssl_set_dbg( &ssl, my_debug, stdout );
+    mbedtls_ssl_set_dbg( &conf, my_debug, stdout );
 
     mbedtls_ssl_set_bio_timeout( &ssl, &server_fd,
                          mbedtls_net_send, mbedtls_net_recv, mbedtls_net_recv_timeout,