diff --git a/src/libraries/luasocket/libluasocket/lua.h b/src/libraries/luasocket/libluasocket/lua.h
index e97bc2ac2..a280df842 100644
--- a/src/libraries/luasocket/libluasocket/lua.h
+++ b/src/libraries/luasocket/libluasocket/lua.h
@@ -1,3 +1,6 @@
+#ifndef LUA_WRAP_H
+#define LUA_WRAP_H
+
 #define LUA_COMPAT_ALL
 #include <lua.h>
 #include <lualib.h>
@@ -10,3 +13,5 @@
 
 extern int luax_typerror(lua_State *L, int narg, const char *type);
 #endif
+
+#endif // LUA_WRAP_H