diff --git a/extmod/modussl.c b/extmod/modussl.c
index 51f4fead81..48de0076d0 100644
--- a/extmod/modussl.c
+++ b/extmod/modussl.c
@@ -78,12 +78,12 @@ STATIC mp_obj_ssl_socket_t *socket_new(mp_obj_t sock, bool server_side) {
 
 STATIC void socket_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
     (void)kind;
-    mp_obj_ssl_socket_t *self = self_in;
+    mp_obj_ssl_socket_t *self = MP_OBJ_TO_PTR(self_in);
     mp_printf(print, "<_SSLSocket %p>", self->ssl_sock);
 }
 
 STATIC mp_uint_t socket_read(mp_obj_t o_in, void *buf, mp_uint_t size, int *errcode) {
-    mp_obj_ssl_socket_t *o = o_in;
+    mp_obj_ssl_socket_t *o = MP_OBJ_TO_PTR(o_in);
 
     while (o->bytes_left == 0) {
         mp_int_t r = ssl_read(o->ssl_sock, &o->buf);
@@ -113,7 +113,7 @@ STATIC mp_uint_t socket_read(mp_obj_t o_in, void *buf, mp_uint_t size, int *errc
 }
 
 STATIC mp_uint_t socket_write(mp_obj_t o_in, const void *buf, mp_uint_t size, int *errcode) {
-    mp_obj_ssl_socket_t *o = o_in;
+    mp_obj_ssl_socket_t *o = MP_OBJ_TO_PTR(o_in);
     mp_int_t r = ssl_write(o->ssl_sock, buf, size);
     if (r < 0) {
         *errcode = r;
@@ -123,7 +123,7 @@ STATIC mp_uint_t socket_write(mp_obj_t o_in, const void *buf, mp_uint_t size, in
 }
 
 STATIC mp_obj_t socket_close(mp_obj_t self_in) {
-    mp_obj_ssl_socket_t *self = self_in;
+    mp_obj_ssl_socket_t *self = MP_OBJ_TO_PTR(self_in);
     ssl_free(self->ssl_sock);
     ssl_ctx_free(self->ssl_ctx);
 
@@ -133,13 +133,13 @@ STATIC mp_obj_t socket_close(mp_obj_t self_in) {
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(socket_close_obj, socket_close);
 
-STATIC const mp_map_elem_t ussl_socket_locals_dict_table[] = {
-    { MP_OBJ_NEW_QSTR(MP_QSTR_read), (mp_obj_t)&mp_stream_read_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_readall), (mp_obj_t)&mp_stream_readall_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_readinto), (mp_obj_t)&mp_stream_readinto_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_readline), (mp_obj_t)&mp_stream_unbuffered_readline_obj},
-    { MP_OBJ_NEW_QSTR(MP_QSTR_write), (mp_obj_t)&mp_stream_write_obj },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_close), (mp_obj_t)&socket_close_obj },
+STATIC const mp_rom_map_elem_t ussl_socket_locals_dict_table[] = {
+    { MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&mp_stream_read_obj) },
+    { MP_ROM_QSTR(MP_QSTR_readall), MP_ROM_PTR(&mp_stream_readall_obj) },
+    { MP_ROM_QSTR(MP_QSTR_readinto), MP_ROM_PTR(&mp_stream_readinto_obj) },
+    { MP_ROM_QSTR(MP_QSTR_readline), MP_ROM_PTR(&mp_stream_unbuffered_readline_obj) },
+    { MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&mp_stream_write_obj) },
+    { MP_ROM_QSTR(MP_QSTR_close), MP_ROM_PTR(&socket_close_obj) },
 };
 
 STATIC MP_DEFINE_CONST_DICT(ussl_socket_locals_dict, ussl_socket_locals_dict_table);
@@ -157,10 +157,10 @@ STATIC const mp_obj_type_t ussl_socket_type = {
     .getiter = NULL,
     .iternext = NULL,
     .stream_p = &ussl_socket_stream_p,
-    .locals_dict = (mp_obj_t)&ussl_socket_locals_dict,
+    .locals_dict = (void*)&ussl_socket_locals_dict,
 };
 
-STATIC mp_obj_t mod_ssl_wrap_socket(mp_uint_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
+STATIC mp_obj_t mod_ssl_wrap_socket(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
     // TODO: Implement more args
     static const mp_arg_t allowed_args[] = {
         { MP_QSTR_server_side, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
@@ -175,13 +175,13 @@ STATIC mp_obj_t mod_ssl_wrap_socket(mp_uint_t n_args, const mp_obj_t *pos_args,
     mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args,
         MP_ARRAY_SIZE(allowed_args), allowed_args, (mp_arg_val_t*)&args);
 
-    return socket_new(sock, args.server_side.u_bool);
+    return MP_OBJ_FROM_PTR(socket_new(sock, args.server_side.u_bool));
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_KW(mod_ssl_wrap_socket_obj, 1, mod_ssl_wrap_socket);
 
-STATIC const mp_map_elem_t mp_module_ssl_globals_table[] = {
-    { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_ussl) },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_wrap_socket), (mp_obj_t)&mod_ssl_wrap_socket_obj },
+STATIC const mp_rom_map_elem_t mp_module_ssl_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_ussl) },
+    { MP_ROM_QSTR(MP_QSTR_wrap_socket), MP_ROM_PTR(&mod_ssl_wrap_socket_obj) },
 };
 
 STATIC MP_DEFINE_CONST_DICT(mp_module_ssl_globals, mp_module_ssl_globals_table);