diff --git a/programs/pkey/rsa_sign_pss.c b/programs/pkey/rsa_sign_pss.c
index e7fcf51..26056dd 100644
--- a/programs/pkey/rsa_sign_pss.c
+++ b/programs/pkey/rsa_sign_pss.c
@@ -119,7 +119,7 @@
                                          MBEDTLS_RSA_PKCS_V21,
                                          MBEDTLS_MD_SHA256 ) ) != 0 )
     {
-        mbedtls_printf( " failed\n  ! Invalid padding\n" );
+        mbedtls_printf( " failed\n  ! Padding not supported\n" );
         goto exit;
     }