diff --git a/main.lua b/main.lua
index 215041f..63a2576 100644
--- a/main.lua
+++ b/main.lua
@@ -1,4 +1,4 @@
-oop = require("oop/oop")
+local oop = require("oop/oop")
 local Types = require("oop/types")
 
 local function attempt(label, fn)