From e88dedabc69013e6f63700f6c18eb9ae6e9e5de1 Mon Sep 17 00:00:00 2001
From: Justin van der Leij <justinvanderleij@gmail.com>
Date: Mon, 30 Jul 2018 13:55:10 +0200
Subject: [PATCH] More fixes

---
 lib/instance.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/instance.lua b/lib/instance.lua
index 1ba3467..ac3e19a 100644
--- a/lib/instance.lua
+++ b/lib/instance.lua
@@ -121,7 +121,7 @@ function Instance:addSystem(system, eventName, callback, enabled)
          enabled  = enabled == nil and true or enabled,
       }
 
-      if enabled then
+      if enabled == nil and true or enabled then
          system:enabledCallback(callback or eventName)
       end
    end