diff --git a/game/dota_addons/barebones/scripts/vscripts/libraries/timers.lua b/game/dota_addons/barebones/scripts/vscripts/libraries/timers.lua
index a380458..83791f1 100644
--- a/game/dota_addons/barebones/scripts/vscripts/libraries/timers.lua
+++ b/game/dota_addons/barebones/scripts/vscripts/libraries/timers.lua
@@ -200,6 +200,7 @@ function Timers:CreateTimer(name, args, context)
     args = {endTime = name, callback = args}
     name = DoUniqueString("timer")
   end
+  if nil == args then error("Timer function is nil") end
   if not args.callback then
     print("Invalid timer created: "..name)
     return
@@ -248,4 +249,4 @@ end
 
 if not Timers.timers then Timers:start() end
 
-GameRules.Timers = Timers
\ No newline at end of file
+GameRules.Timers = Timers