diff --git a/esp8266/moduos.c b/esp8266/moduos.c
index cf655511d2..7510614831 100644
--- a/esp8266/moduos.c
+++ b/esp8266/moduos.c
@@ -152,6 +152,11 @@ STATIC mp_obj_t os_stat(mp_obj_t path_in) {
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_1(os_stat_obj, os_stat);
 
+STATIC mp_obj_t os_statvfs(mp_obj_t path_in) {
+    return vfs_proxy_call(MP_QSTR_statvfs, 1, &path_in);
+}
+STATIC MP_DEFINE_CONST_FUN_OBJ_1(os_statvfs_obj, os_statvfs);
+
 STATIC const mp_rom_map_elem_t os_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_uos) },
     { MP_ROM_QSTR(MP_QSTR_uname), MP_ROM_PTR(&os_uname_obj) },
@@ -170,6 +175,7 @@ STATIC const mp_rom_map_elem_t os_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_remove), MP_ROM_PTR(&os_remove_obj) },
     { MP_ROM_QSTR(MP_QSTR_rename), MP_ROM_PTR(&os_rename_obj) },
     { MP_ROM_QSTR(MP_QSTR_stat), MP_ROM_PTR(&os_stat_obj) },
+    { MP_ROM_QSTR(MP_QSTR_statvfs), MP_ROM_PTR(&os_statvfs_obj) },
     { MP_ROM_QSTR(MP_QSTR_umount), MP_ROM_PTR(&os_umount_obj) },
     #endif
 };