diff --git a/spec/bitser_spec.lua b/spec/bitser_spec.lua
index a14b124..437b410 100644
--- a/spec/bitser_spec.lua
+++ b/spec/bitser_spec.lua
@@ -1,14 +1,5 @@
-local bitser = require 'bitser'
 local ffi = require 'ffi'
 
-local function serdeser(value)
-	return bitser.loads(bitser.dumps(value))
-end
-
-local function test_serdeser(value)
-	assert.are.same(serdeser(value), value)
-end
-
 love = {filesystem = {newFileData = function()
 	return {getPointer = function()
 		local buf = ffi.new("uint8_t[?]", #love.s)
@@ -17,10 +8,20 @@ love = {filesystem = {newFileData = function()
 	end, getSize = function()
 		return #love.s
 	end}
-end, write = function(s)
+end, write = function(fname, s)
 	love.s = s
 end}}
 
+local bitser = require 'bitser'
+
+local function serdeser(value)
+	return bitser.loads(bitser.dumps(value))
+end
+
+local function test_serdeser(value)
+	assert.are.same(serdeser(value), value)
+end
+
 describe("bitser", function()
 	it("serializes simple values", function()
 		test_serdeser(true)