diff --git a/library/ssl_client.c b/library/ssl_client.c
index 769a8f2..33c02e6 100644
--- a/library/ssl_client.c
+++ b/library/ssl_client.c
@@ -434,7 +434,7 @@
 #endif
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-#if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
+#if defined(MBEDTLS_ECDH_C)
     if( mbedtls_ssl_conf_tls13_some_ephemeral_enabled( ssl ) )
     {
         ret = mbedtls_ssl_write_supported_groups_ext( ssl, p, end, &output_len );
@@ -442,7 +442,11 @@
             return( ret );
         p += output_len;
     }
+#endif /* MBEDTLS_ECDH_C */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
 
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+#if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
     if( mbedtls_ssl_conf_tls13_ephemeral_enabled( ssl ) )
     {
         ret = mbedtls_ssl_write_sig_alg_ext( ssl, p, end, &output_len );