diff --git a/programs/ssl/dtls_server.c b/programs/ssl/dtls_server.c
index a44ae0b..ba74ebd 100644
--- a/programs/ssl/dtls_server.c
+++ b/programs/ssl/dtls_server.c
@@ -281,7 +281,7 @@
                                            sizeof( client_ip ) ) ) != 0 )
     {
         printf( " failed\n  ! "
-                "ssl_set_client_transport_id() returned -0x%x\n\n", -ret );
+                "mbedtls_ssl_set_client_transport_id() returned -0x%x\n\n", -ret );
         goto exit;
     }