diff --git a/lib/paths.js b/lib/paths.js
index 476358e..4f0b3f5 100644
--- a/lib/paths.js
+++ b/lib/paths.js
@@ -82,6 +82,13 @@ exports.files = function files(dir, type, callback, options) {
             if (err){
                 return callback(err)
             }
+
+            if(!res){
+              res = {
+                dirs: [],
+                files: []
+              }
+            }
             
             if(type === 'combine'){
               results.files = results.files.concat(res);
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..ded5a44
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,160 @@
+{
+  "name": "node-dir",
+  "version": "0.1.17",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "balanced-match": {
+      "version": "1.0.0",
+      "resolved": "http://registry.npm.taobao.org/balanced-match/download/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+    },
+    "brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "http://registry.npm.taobao.org/brace-expansion/download/brace-expansion-1.1.11.tgz",
+      "integrity": "sha1-PH/L9SnYcibz0vUrlm/1Jx60Qd0=",
+      "requires": {
+        "balanced-match": "1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "commander": {
+      "version": "0.6.1",
+      "resolved": "http://registry.npm.taobao.org/commander/download/commander-0.6.1.tgz",
+      "integrity": "sha1-+mihT2qUXVTbvlDYzbMyDp47GgY=",
+      "dev": true
+    },
+    "concat-map": {
+      "version": "0.0.1",
+      "resolved": "http://registry.npm.taobao.org/concat-map/download/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+    },
+    "debug": {
+      "version": "3.1.0",
+      "resolved": "http://registry.npm.taobao.org/debug/download/debug-3.1.0.tgz",
+      "integrity": "sha1-W7WgZyYotkFJVmuhaBnmFRjGcmE=",
+      "dev": true,
+      "requires": {
+        "ms": "2.0.0"
+      }
+    },
+    "diff": {
+      "version": "1.0.7",
+      "resolved": "http://registry.npm.taobao.org/diff/download/diff-1.0.7.tgz",
+      "integrity": "sha1-JLuwAcSn1VIhaefKvbLCgU7ZHPQ=",
+      "dev": true
+    },
+    "glob": {
+      "version": "3.2.3",
+      "resolved": "http://registry.npm.taobao.org/glob/download/glob-3.2.3.tgz",
+      "integrity": "sha1-4xPusknHr/qlxHUoaw4RW1mDlGc=",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "2.0.3",
+        "inherits": "2.0.3",
+        "minimatch": "0.2.14"
+      },
+      "dependencies": {
+        "minimatch": {
+          "version": "0.2.14",
+          "resolved": "http://registry.npm.taobao.org/minimatch/download/minimatch-0.2.14.tgz",
+          "integrity": "sha1-x054BXT2PG+aCQ6Q775u9TpqdWo=",
+          "dev": true,
+          "requires": {
+            "lru-cache": "2.7.3",
+            "sigmund": "1.0.1"
+          }
+        }
+      }
+    },
+    "graceful-fs": {
+      "version": "2.0.3",
+      "resolved": "http://registry.npm.taobao.org/graceful-fs/download/graceful-fs-2.0.3.tgz",
+      "integrity": "sha1-fNLNsiiko/Nule+mzBQt59GhNtA=",
+      "dev": true
+    },
+    "growl": {
+      "version": "1.7.0",
+      "resolved": "http://registry.npm.taobao.org/growl/download/growl-1.7.0.tgz",
+      "integrity": "sha1-3i1mE20ALhErpw8/EMMc98NQsto=",
+      "dev": true
+    },
+    "inherits": {
+      "version": "2.0.3",
+      "resolved": "http://registry.npm.taobao.org/inherits/download/inherits-2.0.3.tgz",
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
+      "dev": true
+    },
+    "jade": {
+      "version": "0.26.3",
+      "resolved": "http://registry.npm.taobao.org/jade/download/jade-0.26.3.tgz",
+      "integrity": "sha1-jxDXl32NefL2/4YqgbBRPMslaGw=",
+      "dev": true,
+      "requires": {
+        "commander": "0.6.1",
+        "mkdirp": "0.3.0"
+      },
+      "dependencies": {
+        "mkdirp": {
+          "version": "0.3.0",
+          "resolved": "http://registry.npm.taobao.org/mkdirp/download/mkdirp-0.3.0.tgz",
+          "integrity": "sha1-G79asbqCevI1dRQ0kEJkVfSB/h4=",
+          "dev": true
+        }
+      }
+    },
+    "lru-cache": {
+      "version": "2.7.3",
+      "resolved": "http://registry.npm.taobao.org/lru-cache/download/lru-cache-2.7.3.tgz",
+      "integrity": "sha1-bUUk6LlV+V1PW1iFHOId1y+06VI=",
+      "dev": true
+    },
+    "minimatch": {
+      "version": "3.0.4",
+      "resolved": "http://registry.npm.taobao.org/minimatch/download/minimatch-3.0.4.tgz",
+      "integrity": "sha1-UWbihkV/AzBgZL5Ul+jbsMPTIIM=",
+      "requires": {
+        "brace-expansion": "1.1.11"
+      }
+    },
+    "mkdirp": {
+      "version": "0.3.5",
+      "resolved": "http://registry.npm.taobao.org/mkdirp/download/mkdirp-0.3.5.tgz",
+      "integrity": "sha1-3j5fiWHIjHh+4TaN+EmsRBPsqNc=",
+      "dev": true
+    },
+    "mocha": {
+      "version": "1.13.0",
+      "resolved": "http://registry.npm.taobao.org/mocha/download/mocha-1.13.0.tgz",
+      "integrity": "sha1-jY+k4xC5TMbv6z7SauypbeqTMHw=",
+      "dev": true,
+      "requires": {
+        "commander": "0.6.1",
+        "debug": "3.1.0",
+        "diff": "1.0.7",
+        "glob": "3.2.3",
+        "growl": "1.7.0",
+        "jade": "0.26.3",
+        "mkdirp": "0.3.5"
+      }
+    },
+    "ms": {
+      "version": "2.0.0",
+      "resolved": "http://registry.npm.taobao.org/ms/download/ms-2.0.0.tgz",
+      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
+      "dev": true
+    },
+    "should": {
+      "version": "2.0.2",
+      "resolved": "http://registry.npm.taobao.org/should/download/should-2.0.2.tgz",
+      "integrity": "sha1-30hGTggEql23Iyd7swqZjryKCFc=",
+      "dev": true
+    },
+    "sigmund": {
+      "version": "1.0.1",
+      "resolved": "http://registry.npm.taobao.org/sigmund/download/sigmund-1.0.1.tgz",
+      "integrity": "sha1-P/IfGYytIXX587eBhT/ZTQ0ZtZA=",
+      "dev": true
+    }
+  }
+}
diff --git "a/test/fixtures/testdir5/testu\347\365es.txt" "b/test/fixtures/testdir5/testu\347\365es.txt"
deleted file mode 100644
index 5dcd581..0000000
--- "a/test/fixtures/testdir5/testu\347\365es.txt"
+++ /dev/null
@@ -1 +0,0 @@
-bla
\ No newline at end of file