diff --git a/programs/pkey/ecdsa.c b/programs/pkey/ecdsa.c
index 1bbf826..3dacd75 100644
--- a/programs/pkey/ecdsa.c
+++ b/programs/pkey/ecdsa.c
@@ -55,7 +55,7 @@
 #define ECPARAMS    MBEDTLS_ECP_DP_SECP192R1
 
 #if !defined(ECPARAMS)
-#define ECPARAMS    mbedtls_ecp_curve_list()->grp_id
+#define ECPARAMS    mbedtls_ecp_curve_list()->MBEDTLS_PRIVATE(grp_id)
 #endif
 
 #if !defined(MBEDTLS_ECDSA_C) || !defined(MBEDTLS_SHA256_C) || \
@@ -84,7 +84,7 @@
     unsigned char buf[300];
     size_t len;
 
-    if( mbedtls_ecp_point_write_binary( &key->grp, &key->Q,
+    if( mbedtls_ecp_point_write_binary( &key->MBEDTLS_PRIVATE(grp), &key->MBEDTLS_PRIVATE(Q),
                 MBEDTLS_ECP_PF_UNCOMPRESSED, &len, buf, sizeof buf ) != 0 )
     {
         mbedtls_printf("internal error\n");
@@ -156,7 +156,7 @@
         goto exit;
     }
 
-    mbedtls_printf( " ok (key size: %d bits)\n", (int) ctx_sign.grp.pbits );
+    mbedtls_printf( " ok (key size: %d bits)\n", (int) ctx_sign.MBEDTLS_PRIVATE(grp).MBEDTLS_PRIVATE(pbits) );
 
     dump_pubkey( "  + Public key: ", &ctx_sign );
 
@@ -204,13 +204,13 @@
     mbedtls_printf( "  . Preparing verification context..." );
     fflush( stdout );
 
-    if( ( ret = mbedtls_ecp_group_copy( &ctx_verify.grp, &ctx_sign.grp ) ) != 0 )
+    if( ( ret = mbedtls_ecp_group_copy( &ctx_verify.MBEDTLS_PRIVATE(grp), &ctx_sign.MBEDTLS_PRIVATE(grp) ) ) != 0 )
     {
         mbedtls_printf( " failed\n  ! mbedtls_ecp_group_copy returned %d\n", ret );
         goto exit;
     }
 
-    if( ( ret = mbedtls_ecp_copy( &ctx_verify.Q, &ctx_sign.Q ) ) != 0 )
+    if( ( ret = mbedtls_ecp_copy( &ctx_verify.MBEDTLS_PRIVATE(Q), &ctx_sign.MBEDTLS_PRIVATE(Q) ) ) != 0 )
     {
         mbedtls_printf( " failed\n  ! mbedtls_ecp_copy returned %d\n", ret );
         goto exit;