diff --git a/index.js b/index.js
index b5c1b2a..2d84319 100644
--- a/index.js
+++ b/index.js
@@ -13,6 +13,7 @@ module.exports = function (file, opts) {
 
   var blockSize = opts.blockSize || 1024*16
   var codec = opts.codec || {encode: id, decode: id, buffer: true}
+  var flags = opts.flags || 'a+'
   var cache = opts.cache || Cache(1024)
   var offsetCodec = opts.offsetCodec || 32
 
diff --git a/inject.js b/inject.js
index dfe7f37..f5f0a92 100644
--- a/inject.js
+++ b/inject.js
@@ -124,6 +124,9 @@ module.exports = function (blocks, frame, codec, file, cache) {
       )).catch((err) => cb(err))
       .then(() => cb(null))
     },
+    close: function (cb) {
+      cb()
+    },
     methods: {
       del: 'async'
     }
@@ -131,6 +134,3 @@ module.exports = function (blocks, frame, codec, file, cache) {
 }
 
 
-
-
-
diff --git a/bench.js b/test/bench.js
similarity index 90%
rename from bench.js
rename to test/bench.js
index ecd6cc6..6113a92 100644
--- a/bench.js
+++ b/test/bench.js
@@ -1,4 +1,4 @@
-var FlumeLog = require('./')
+var FlumeLog = require('../')
 var codec = require('flumecodec')
 
 require('bench-flumelog')(function () {
diff --git a/test/flumelog.js b/test/flumelog.js
index 1f3efd1..6bbad48 100644
--- a/test/flumelog.js
+++ b/test/flumelog.js
@@ -3,8 +3,8 @@ var create = require('../')
 var testLog = require('test-flumelog')
 
 function test(name, opts, cb) {
-  testLog(function () {
-    return create('/tmp/test_flumelog-offset_'+Date.now(), Object.assign({
+  testLog(function (filename) {
+    return create(filename, Object.assign({
       blockSize: 1024,
       codec: {
         encode: function (v) {