diff --git a/include/mbedtls/ssl.h b/include/mbedtls/ssl.h
index b0491bf..f533859 100644
--- a/include/mbedtls/ssl.h
+++ b/include/mbedtls/ssl.h
@@ -484,9 +484,9 @@
 #define MBEDTLS_TLS_EXT_ALPN                        16
 
 #define MBEDTLS_TLS_EXT_SCT                         18 /* RFC 6962 TLS 1.2 and 1.3 */
-#define MBEDTLS_TLS_EXT_CLI_CERT_TYPE               19 /* RFC 7250 TLS 1.3 */
-#define MBEDTLS_TLS_EXT_SERV_CERT_TYPE              20 /* RFC 7250 TLS 1.3 */
-#define MBEDTLS_TLS_EXT_PADDING                     21 /* RFC 7685 TLS 1.3 */
+#define MBEDTLS_TLS_EXT_CLI_CERT_TYPE               19 /* RFC 7250 TLS 1.2 and 1.3 */
+#define MBEDTLS_TLS_EXT_SERV_CERT_TYPE              20 /* RFC 7250 TLS 1.2 and 1.3 */
+#define MBEDTLS_TLS_EXT_PADDING                     21 /* RFC 7685 TLS 1.2 and 1.3 */
 #define MBEDTLS_TLS_EXT_ENCRYPT_THEN_MAC            22 /* 0x16 */
 #define MBEDTLS_TLS_EXT_EXTENDED_MASTER_SECRET  0x0017 /* 23 */