diff --git a/test/mkdirp/chmod.test.js b/test/mkdirp/chmod.test.js
index 289b2a5..cb1b18a 100644
--- a/test/mkdirp/chmod.test.js
+++ b/test/mkdirp/chmod.test.js
@@ -9,6 +9,7 @@ var fse = require('../../')
 var o755 = parseInt('755', 8)
 var o744 = parseInt('744', 8)
 var o777 = parseInt('777', 8)
+var o666 = parseInt('666', 8)
 
 describe('mkdirp / chmod', function () {
   var TEST_DIR
@@ -40,7 +41,13 @@ describe('mkdirp / chmod', function () {
       fs.stat(TEST_SUBDIR, function (er, stat) {
         assert.ifError(er, 'should exist')
         assert.ok(stat && stat.isDirectory(), 'should be directory')
-        assert.equal(stat && stat.mode & o777, mode, 'should be 0744')
+
+        if (os.platform().indexOf('win') === 0) {
+          assert.equal(stat && stat.mode & o777, o666, 'windows shit')
+        } else {
+          assert.equal(stat && stat.mode & o777, mode, 'should be 0744')
+        }
+
         done()
       })
     })
diff --git a/test/mkdirp/mkdirp.test.js b/test/mkdirp/mkdirp.test.js
index 0adfcfd..10b1f71 100644
--- a/test/mkdirp/mkdirp.test.js
+++ b/test/mkdirp/mkdirp.test.js
@@ -8,6 +8,7 @@ var fse = require(process.cwd())
 
 var o755 = parseInt('755', 8)
 var o777 = parseInt('777', 8)
+var o666 = parseInt('666', 8)
 
 describe('mkdirp / mkdirp', function () {
   var TEST_DIR
@@ -26,7 +27,7 @@ describe('mkdirp / mkdirp', function () {
     var y = Math.floor(Math.random() * Math.pow(16, 4)).toString(16)
     var z = Math.floor(Math.random() * Math.pow(16, 4)).toString(16)
 
-    var file = TEST_DIR + [x, y, z].join(path.sep)
+    var file = path.join(TEST_DIR, x, y, z)
 
     fse.mkdirp(file, o755, function (err) {
       assert.ifError(err)
@@ -34,7 +35,13 @@ describe('mkdirp / mkdirp', function () {
         assert.ok(ex, 'file created')
         fs.stat(file, function (err, stat) {
           assert.ifError(err)
-          assert.equal(stat.mode & o777, o755)
+
+          if (os.platform().indexOf('win') === 0) {
+            assert.equal(stat.mode & o777, o666)
+          } else {
+            assert.equal(stat.mode & o777, o755)
+          }
+
           assert.ok(stat.isDirectory(), 'target not a directory')
           done()
         })
diff --git a/test/mkdirp/perm.test.js b/test/mkdirp/perm.test.js
index 7863879..d265086 100644
--- a/test/mkdirp/perm.test.js
+++ b/test/mkdirp/perm.test.js
@@ -8,6 +8,7 @@ var fse = require('../../')
 
 var o755 = parseInt('755', 8)
 var o777 = parseInt('777', 8)
+var o666 = parseInt('666', 8)
 
 describe('mkdirp / perm', function () {
   var TEST_DIR
@@ -30,7 +31,13 @@ describe('mkdirp / perm', function () {
         assert.ok(ex, 'file created')
         fs.stat(file, function (err, stat) {
           assert.ifError(err)
-          assert.equal(stat.mode & o777, o755)
+
+          if (os.platform().indexOf('win') === 0) {
+            assert.equal(stat.mode & o777, o666)
+          } else {
+            assert.equal(stat.mode & o777, o755)
+          }
+
           assert.ok(stat.isDirectory(), 'target not a directory')
           done()
         })
diff --git a/test/mkdirp/perm_sync.js b/test/mkdirp/perm_sync.js
index 652055c..f2fa7ce 100644
--- a/test/mkdirp/perm_sync.js
+++ b/test/mkdirp/perm_sync.js
@@ -8,6 +8,7 @@ var fse = require(process.cwd())
 
 var o755 = parseInt('755', 8)
 var o777 = parseInt('777', 8)
+var o666 = parseInt('666', 8)
 
 describe('mkdirp / perm_sync', function () {
   var TEST_DIR
@@ -29,7 +30,13 @@ describe('mkdirp / perm_sync', function () {
       assert.ok(ex, 'file created')
       fs.stat(file, function (err, stat) {
         assert.ifError(err)
-        assert.equal(stat.mode & o777, o755)
+
+        if (os.platform().indexOf('win') === 0) {
+          assert.equal(stat.mode & o777, o666)
+        } else {
+          assert.equal(stat.mode & o777, o755)
+        }
+
         assert.ok(stat.isDirectory(), 'target not a directory')
         done()
       })
diff --git a/test/mkdirp/race.test.js b/test/mkdirp/race.test.js
index 8d3274f..9022df6 100644
--- a/test/mkdirp/race.test.js
+++ b/test/mkdirp/race.test.js
@@ -8,6 +8,7 @@ var fse = require(process.cwd())
 
 var o755 = parseInt('755', 8)
 var o777 = parseInt('777', 8)
+var o666 = parseInt('666', 8)
 
 describe('mkdirp / race', function () {
   var TEST_DIR, file
@@ -43,16 +44,22 @@ describe('mkdirp / race', function () {
       if (--res === 0) done()
     })
 
-    function mk (file, cb) {
+    function mk (file, callback) {
       fse.mkdirp(file, o755, function (err) {
         assert.ifError(err)
         fs.exists(file, function (ex) {
           assert.ok(ex, 'file created')
           fs.stat(file, function (err, stat) {
             assert.ifError(err)
-            assert.equal(stat.mode & o777, o755)
+
+            if (os.platform().indexOf('win') === 0) {
+              assert.equal(stat.mode & o777, o666)
+            } else {
+              assert.equal(stat.mode & o777, o755)
+            }
+
             assert.ok(stat.isDirectory(), 'target not a directory')
-            if (cb) cb()
+            if (callback) callback()
           })
         })
       })
diff --git a/test/mkdirp/rel.test.js b/test/mkdirp/rel.test.js
index 7f51341..815d9d6 100644
--- a/test/mkdirp/rel.test.js
+++ b/test/mkdirp/rel.test.js
@@ -8,6 +8,7 @@ var fse = require(process.cwd())
 
 var o755 = parseInt('755', 8)
 var o777 = parseInt('777', 8)
+var o666 = parseInt('666', 8)
 
 describe('mkdirp / relative', function () {
   var TEST_DIR, file
@@ -42,8 +43,15 @@ describe('mkdirp / relative', function () {
         assert.ok(ex, 'file created')
         fs.stat(file, function (err, stat) {
           assert.ifError(err)
+          // restore
           process.chdir(cwd)
-          assert.equal(stat.mode & o777, o755)
+
+          if (os.platform().indexOf('win') === 0) {
+            assert.equal(stat.mode & o777, o666)
+          } else {
+            assert.equal(stat.mode & o777, o755)
+          }
+
           assert.ok(stat.isDirectory(), 'target not a directory')
           done()
         })