diff --git a/programs/ssl/ssl_client1.c b/programs/ssl/ssl_client1.c
index fc601ec..55215f2 100644
--- a/programs/ssl/ssl_client1.c
+++ b/programs/ssl/ssl_client1.c
@@ -230,13 +230,17 @@
     /* In real life, we probably want to bail out when ret != 0 */
     if( ( flags = mbedtls_ssl_get_verify_result( &ssl ) ) != 0 )
     {
+#if defined(MBEDTLS_X509_INFO)
         char vrfy_buf[512];
+#endif
 
         mbedtls_printf( " failed\n" );
 
+#if defined(MBEDTLS_X509_INFO)
         mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), "  ! ", flags );
 
         mbedtls_printf( "%s\n", vrfy_buf );
+#endif
     }
     else
         mbedtls_printf( " ok\n" );