diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 22e8aa4cd9..dbaa70c511 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -1928,10 +1928,15 @@ static int ssl_tls13_write_client_certificate( mbedtls_ssl_context *ssl )
     mbedtls_ssl_set_outbound_transform( ssl, ssl->handshake->transform_handshake );
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
-    return( mbedtls_ssl_tls13_write_certificate( ssl ) );
-#else
-    return( 0 );
+    if( ssl->handshake->client_auth )
+        return( mbedtls_ssl_tls13_write_certificate( ssl ) );
+
+    mbedtls_ssl_handshake_set_state( ssl, MBEDTLS_SSL_CLIENT_FINISHED );
+
+    MBEDTLS_SSL_DEBUG_MSG( 2, ( "No certificate message to send." ) );
 #endif
+
+    return( 0 );
 }
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
diff --git a/library/ssl_tls13_generic.c b/library/ssl_tls13_generic.c
index 330d1ccb2c..d054d4d75d 100644
--- a/library/ssl_tls13_generic.c
+++ b/library/ssl_tls13_generic.c
@@ -847,54 +847,6 @@ cleanup:
     return( ret );
 }
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
-
-/*
- * STATE HANDLING: Output Certificate
- */
-/* Check if a certificate should be written, and if yes,
- * if it is available.
- * Returns a negative error code on failure ( such as no certificate
- * being available on the server ), and otherwise
- * SSL_WRITE_CERTIFICATE_SEND or
- * SSL_WRITE_CERTIFICATE_SKIP
- * indicating that a Certificate message should be written based
- * on the configured certificate, or whether it should be silently skipped.
- */
-#define SSL_WRITE_CERTIFICATE_SEND  0
-#define SSL_WRITE_CERTIFICATE_SKIP  1
-
-static int ssl_tls13_write_certificate_coordinate( mbedtls_ssl_context *ssl )
-{
-
-    /* For PSK and ECDHE-PSK ciphersuites there is no certificate to exchange. */
-    if( mbedtls_ssl_tls13_some_psk_enabled( ssl ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate" ) );
-        return( SSL_WRITE_CERTIFICATE_SKIP );
-    }
-
-#if defined(MBEDTLS_SSL_CLI_C)
-    if( ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT )
-    {
-        /* The client MUST send a Certificate message if and only
-         * if the server has requested client authentication via a
-         * CertificateRequest message.
-         *
-         * client_auth indicates whether the server had requested
-         * client authentication.
-         */
-        if( ssl->handshake->client_auth == 0 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate" ) );
-            return( SSL_WRITE_CERTIFICATE_SKIP );
-        }
-    }
-#endif /* MBEDTLS_SSL_CLI_C */
-
-    return( SSL_WRITE_CERTIFICATE_SEND );
-
-}
-
 /*
  *  enum {
  *        X509(0),
@@ -1006,39 +958,27 @@ static int ssl_tls13_finalize_write_certificate( mbedtls_ssl_context *ssl )
 int mbedtls_ssl_tls13_write_certificate( mbedtls_ssl_context *ssl )
 {
     int ret;
+    unsigned char *buf;
+    size_t buf_len, msg_len;
+
     MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write certificate" ) );
 
-    /* Coordination: Check if we need to send a certificate. */
-    MBEDTLS_SSL_PROC_CHK_NEG( ssl_tls13_write_certificate_coordinate( ssl ) );
+    MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_start_handshake_msg( ssl,
+                          MBEDTLS_SSL_HS_CERTIFICATE, &buf, &buf_len ) );
 
-    if( ret == SSL_WRITE_CERTIFICATE_SEND )
-    {
-        unsigned char *buf;
-        size_t buf_len, msg_len;
+    MBEDTLS_SSL_PROC_CHK( ssl_tls13_write_certificate_body( ssl,
+                                                            buf,
+                                                            buf + buf_len,
+                                                            &msg_len ) );
 
-        MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_start_handshake_msg( ssl,
-                   MBEDTLS_SSL_HS_CERTIFICATE, &buf, &buf_len ) );
-
-        MBEDTLS_SSL_PROC_CHK( ssl_tls13_write_certificate_body( ssl,
-                                                                buf,
-                                                                buf + buf_len,
-                                                                &msg_len ) );
-
-        mbedtls_ssl_tls13_add_hs_msg_to_checksum( ssl,
-                                                  MBEDTLS_SSL_HS_CERTIFICATE,
-                                                  buf,
-                                                  msg_len );
-
-        MBEDTLS_SSL_PROC_CHK( ssl_tls13_finalize_write_certificate( ssl ) );
-        MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_finish_handshake_msg(
-                                  ssl, buf_len, msg_len ) );
-    }
-    else
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate" ) );
-        MBEDTLS_SSL_PROC_CHK( ssl_tls13_finalize_write_certificate( ssl ) );
-    }
+    mbedtls_ssl_tls13_add_hs_msg_to_checksum( ssl,
+                                              MBEDTLS_SSL_HS_CERTIFICATE,
+                                              buf,
+                                              msg_len );
 
+    MBEDTLS_SSL_PROC_CHK( ssl_tls13_finalize_write_certificate( ssl ) );
+    MBEDTLS_SSL_PROC_CHK( mbedtls_ssl_tls13_finish_handshake_msg(
+                              ssl, buf_len, msg_len ) );
 cleanup:
 
     MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write certificate" ) );