diff --git a/modules/base/header.lua b/modules/base/header.lua
index a4d7247..47a5a87 100644
--- a/modules/base/header.lua
+++ b/modules/base/header.lua
@@ -32,13 +32,13 @@ do -- so local works
    eq[#eq+1]={computer.pullSignal(p)} -- add the latest event to the eq
    if #eq > 16 then
     table.remove(eq,1) -- remove the earliest if the eq is full
-    for pid,proc in ipairs(tT) do
+    for pid,proc in pairs(tT) do
      if proc.ep > 1 then
       proc.ep = proc.ep - 1 -- decrement pointers for tasks to keep them on the same ones
      end
     end
    end
-   for pid,proc in ipairs(tT) do
+   for pid,proc in pairs(tT) do
     if coroutine.status(proc.c) == "dead" then
      tT[pid] = nil
     else
@@ -89,7 +89,7 @@ do -- so local works
  end
  function os.tasks() -- returns a table of tasks running on the system
   local t = {}
-  for k,v in ipairs(tT) do
+  for k,v in pairs(tT) do
    t[k] = v.n
   end
   return t