diff --git a/programs/ssl/dtls_client.c b/programs/ssl/dtls_client.c
index 90db06c..d455b04 100644
--- a/programs/ssl/dtls_client.c
+++ b/programs/ssl/dtls_client.c
@@ -252,13 +252,17 @@
      * MBEDTLS_SSL_VERIFY_OPTIONAL, we would bail out here if 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" );
diff --git a/programs/ssl/query_config.c b/programs/ssl/query_config.c
index be35a76..b9070c8 100644
--- a/programs/ssl/query_config.c
+++ b/programs/ssl/query_config.c
@@ -1482,6 +1482,14 @@
     }
 #endif /* MBEDTLS_X509_CHECK_EXTENDED_KEY_USAGE */
 
+#if defined(MBEDTLS_X509_INFO)
+    if( strcmp( "MBEDTLS_X509_INFO", config ) == 0 )
+    {
+        MACRO_EXPANSION_TO_STR( MBEDTLS_X509_INFO );
+        return( 0 );
+    }
+#endif /* MBEDTLS_X509_INFO */
+
 #if defined(MBEDTLS_X509_RSASSA_PSS_SUPPORT)
     if( strcmp( "MBEDTLS_X509_RSASSA_PSS_SUPPORT", config ) == 0 )
     {
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" );
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index 6841f7b..f2e00f7 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -488,19 +488,28 @@
 static int my_verify( void *data, mbedtls_x509_crt *crt,
                       int depth, uint32_t *flags )
 {
+#if defined(MBEDTLS_X509_INFO)
     char buf[1024];
+#endif
     ((void) data);
 
+#if defined(MBEDTLS_X509_INFO)
     mbedtls_printf( "\nVerify requested for (Depth %d):\n", depth );
     mbedtls_x509_crt_info( buf, sizeof( buf ) - 1, "", crt );
     mbedtls_printf( "%s", buf );
+#else
+    ((void) crt);
+    ((void) depth);
+#endif
 
     if ( ( *flags ) == 0 )
         mbedtls_printf( "  This certificate has no flags\n" );
     else
     {
+#if defined(MBEDTLS_X509_INFO)
         mbedtls_x509_crt_verify_info( buf, sizeof( buf ), "  ! ", *flags );
         mbedtls_printf( "%s\n", buf );
+#endif
     }
 
     return( 0 );
@@ -1976,14 +1985,18 @@
 
     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" );
diff --git a/programs/ssl/ssl_mail_client.c b/programs/ssl/ssl_mail_client.c
index 55c90c6..7a84b6a 100644
--- a/programs/ssl/ssl_mail_client.c
+++ b/programs/ssl/ssl_mail_client.c
@@ -220,21 +220,27 @@
     /* 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" );
 
+#if defined(MBEDTLS_X509_INFO)
     mbedtls_printf( "  . Peer certificate information    ...\n" );
     mbedtls_x509_crt_info( (char *) buf, sizeof( buf ) - 1, "      ",
                    mbedtls_ssl_get_peer_cert( ssl ) );
     mbedtls_printf( "%s\n", buf );
+#endif
 
     return( 0 );
 }
diff --git a/programs/ssl/ssl_server2.c b/programs/ssl/ssl_server2.c
index 3bd76ec..bf97514 100644
--- a/programs/ssl/ssl_server2.c
+++ b/programs/ssl/ssl_server2.c
@@ -2942,7 +2942,7 @@
     {
         mbedtls_printf( " failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n", -ret );
 
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
+#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_X509_INFO)
         if( ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED )
         {
             char vrfy_buf[512];
@@ -2994,17 +2994,22 @@
 
     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" );
 
+#if defined(MBEDTLS_X509_INFO)
     if( mbedtls_ssl_get_peer_cert( &ssl ) != NULL )
     {
         char crt_buf[512];
@@ -3014,6 +3019,7 @@
                        mbedtls_ssl_get_peer_cert( &ssl ) );
         mbedtls_printf( "%s\n", crt_buf );
     }
+#endif /* MBEDTLS_X509_INFO */
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)