diff --git a/lib/multipartform.js b/lib/multipartform.js
index 48002ae..6fd44c9 100644
--- a/lib/multipartform.js
+++ b/lib/multipartform.js
@@ -108,9 +108,9 @@ Part.prototype = {
 
         //Now write out the body of the Part
         if (this.value instanceof File) {
-            fs.open(this.value.path, 'r+', function (err, fd) {
+            fs.openSync(this.value.path, 'r+', function (err, fd) {
                 var stats = fs.fstatSync(fd);
-                var bufferSize = stats.size
+                var bufferSize = stats.size;
                 if (err) throw err;
                 var chunkSize = 512;
                 var position = 0;
@@ -129,7 +129,9 @@ Part.prototype = {
                         else {
                             stream.write("\r\n");
                             callback();
-                            fs.close(fd);
+                            fs.close(fd, function(err) {
+                                callback(err);
+                            });
                         }
                     });
                 })(); // reader()