diff --git a/src/gui/luainstance.cpp b/src/gui/luainstance.cpp
index d893ad4dd..4f9f29fb9 100644
--- a/src/gui/luainstance.cpp
+++ b/src/gui/luainstance.cpp
@@ -302,6 +302,13 @@ const luaL_Reg CLuaInstance::methods[] =
 /* hack: we link against luaposix, which is included in our
  * custom built lualib */
 extern "C" { LUAMOD_API int (luaopen_posix_c) (lua_State *L); }
+#else
+static int dolibrary (lua_State *L, const char *name) 
+{
+	lua_getglobal(L, "require");
+	lua_pushstring(L, name);
+	return report(L, lua_pcall(L, 1, 0, 0));
+}
 #endif
 /* load basic functions and register our own C callbacks */
 void CLuaInstance::registerFunctions()
@@ -314,6 +321,8 @@ void CLuaInstance::registerFunctions()
 #ifndef DYNAMIC_LUAPOSIX
 	luaopen_posix_c(lua);
 #endif
+	dolibrary(lua,"posix");
+#endif
 
 	lua_newtable(lua);
 	int methodtable = lua_gettop(lua);