diff --git a/sandbox.lua b/sandbox.lua
index ff0a8d4..b138db7 100644
--- a/sandbox.lua
+++ b/sandbox.lua
@@ -120,19 +120,26 @@ function sandbox.protect(f, options)
 
   options = options or {}
 
-  local quota = options.quota or 500000
+  local quota = false
+  if options.quota ~= false then
+    quota = options.quota or 500000
+  end
+
   local env   = merge(options.env or {}, BASE_ENV)
   env._G = env._G or env
 
   setfenv(f, env)
 
   return function(...)
-    local timeout = function()
-      cleanup()
-      error('Quota exceeded: ' .. tostring(quota))
+
+    if quota then
+      local timeout = function()
+        cleanup()
+        error('Quota exceeded: ' .. tostring(quota))
+      end
+      sethook(timeout, "", quota)
     end
 
-    sethook(timeout, "", quota)
     string.rep = nil
 
     local ok, result = pcall(f, ...)
diff --git a/spec/sandbox_spec.lua b/spec/sandbox_spec.lua
index e81e819..7191ed5 100644
--- a/spec/sandbox_spec.lua
+++ b/spec/sandbox_spec.lua
@@ -83,6 +83,10 @@ describe('sandbox.run', function()
       assert_error(function() sandbox.run("for i=1,100 do end", {quota = 20}) end)
     end)
 
+    it('does not use quotes if the quote param is false', function()
+      assert_not_error(function() sandbox.run("for i=1,1000000 do end", {quota = false}) end)
+    end)
+
   end)