diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index cb299b1..b945364 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -1534,6 +1534,10 @@
             {
                 sig_alg_list[i++] = MBEDTLS_TLS13_SIG_ECDSA_SECP521R1_SHA512;
             }
+            else if( strcmp( q, "rsa_pkcs1_sha256" ) == 0 )
+            {
+                sig_alg_list[i++] = MBEDTLS_TLS13_SIG_RSA_PKCS1_SHA1;
+            }
             else
             {
                 mbedtls_printf( "unknown signature algorithm %s\n", q );
@@ -1541,6 +1545,7 @@
                 mbedtls_printf( "ecdsa_secp256r1_sha256 " );
                 mbedtls_printf( "ecdsa_secp384r1_sha384 " );
                 mbedtls_printf( "ecdsa_secp521r1_sha512 " );
+                mbedtls_printf( "rsa_pkcs1_sha256 " );
                 mbedtls_printf( "\n" );
                 goto exit;
             }