diff --git a/inc/desktop/platform_conf.h b/inc/desktop/platform_conf.h
index fd2b631f..0a379aab 100644
--- a/inc/desktop/platform_conf.h
+++ b/inc/desktop/platform_conf.h
@@ -9,6 +9,9 @@
 #define BUILD_RPC
 #define LUARPC_ENABLE_SERIAL
 
+#define LUA_PLATFORM_LIBS_REG \
+  {LUA_OSLIBNAME, luaopen_os}
+
 #define LUA_PLATFORM_LIBS_ROM \
   _ROM( AUXLIB_RPC, luaopen_rpc, rpc_map )\
   _ROM( AUXLIB_BITARRAY, luaopen_bitarray, bitarray_map )\