diff --git a/programs/pkey/rsa_genkey.c b/programs/pkey/rsa_genkey.c
index 26a8925..1dcfc52 100644
--- a/programs/pkey/rsa_genkey.c
+++ b/programs/pkey/rsa_genkey.c
@@ -75,7 +75,7 @@
     const char *pers = "rsa_genkey";
 
     mbedtls_ctr_drbg_init( &ctr_drbg );
-    mbedtls_rsa_init( &rsa, MBEDTLS_RSA_PKCS_V15, 0 );
+    mbedtls_rsa_init( &rsa );
     mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
     mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP );
     mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP );