diff --git a/exp_legacy/module/modules/gui/research.lua b/exp_legacy/module/modules/gui/research.lua
index 0d7a2c37..5142f6f1 100644
--- a/exp_legacy/module/modules/gui/research.lua
+++ b/exp_legacy/module/modules/gui/research.lua
@@ -273,18 +273,16 @@ Event.add(defines.events.on_research_finished, function(event)
     end
 end)
 
---[[
 Event.add(defines.events.on_research_started, function(event)
     local r = event.research
     local rq = r.force.research_queue
 
     for i = #rq, 1, -1 do
-        if config.limit_res[rq[i] ] and rq[i].level > config.limit_res[rq[i] ] then
+        if config.limit_res[rq[i]] and rq[i].level > config.limit_res[rq[i]] then
             rq[i] = nil
         end
     end
 end)
-]]
 
 Event.on_nth_tick(60, function()
     local current_time = research_time_format(game.tick)