diff --git a/src/luasocket/timeout.c b/src/luasocket/timeout.c
index 94a524b..4fc1fb1 100644
--- a/src/luasocket/timeout.c
+++ b/src/luasocket/timeout.c
@@ -146,7 +146,7 @@ int timeout_open(lua_State *L) {
 #if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
     luaL_setfuncs(L, func, 0);
 #else
-    luaL_openlib(L, NULL, func, 0);
+    luaL_register(L, NULL, func);
 #endif
     return 0;
 }