diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index e9250fc..b498fd4 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -1687,7 +1687,7 @@
     }
     else if( ret == SSL_CERTIFICATE_REQUEST_SKIP )
     {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate request" ) );
+        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip tls13 parse certificate request" ) );
         ret = 0;
     }
     else
@@ -1793,7 +1793,7 @@
     }
     else
     {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "No certificate message to send." ) );
+        MBEDTLS_SSL_DEBUG_MSG( 2, ( "skip write certificate" ) );
     }
 #endif