diff --git a/src/hsm/cmd_general_authenticate.c b/src/hsm/cmd_general_authenticate.c
index 26afc76..77b16b8 100644
--- a/src/hsm/cmd_general_authenticate.c
+++ b/src/hsm/cmd_general_authenticate.c
@@ -51,7 +51,7 @@ int cmd_general_authenticate() {
             }
             mbedtls_ecdh_context ctx;
             mbedtls_ecdh_init(&ctx);
-            mbedtls_ecp_group_id gid = MBEDTLS_ECP_DP_SECP192R1;
+            mbedtls_ecp_group_id gid = MBEDTLS_ECP_DP_SECP256R1;
             r = mbedtls_ecdh_setup(&ctx, gid);
             if (r != 0) {
                 mbedtls_ecdsa_free(&ectx);