diff --git a/lib/client.js b/lib/client.js
index 24417ec17..5dd132ded 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -877,7 +877,7 @@ Request.prototype.end = function(fn){
   if (this._withCredentials) xhr.withCredentials = true;
 
   // body
-  if ('GET' != this.method && 'HEAD' != this.method && 'string' != typeof data && !this._isHost(data)) {
+  if (!this._formData && 'GET' != this.method && 'HEAD' != this.method && 'string' != typeof data && !this._isHost(data)) {
     // serialize stuff
     var contentType = this._header['content-type'];
     var serialize = this._serializer || request.serialize[contentType ? contentType.split(';')[0] : ''];
diff --git a/lib/request-base.js b/lib/request-base.js
index f053946d3..358bc541b 100644
--- a/lib/request-base.js
+++ b/lib/request-base.js
@@ -233,10 +233,20 @@ RequestBase.prototype.field = function(name, val) {
     return this;
   }
 
+  if (Array.isArray(val)) {
+    for (var i in val) {
+      this.field(name, val[i]);
+    }
+    return this;
+  }
+
   // val should be defined now
   if (null === val || undefined === val) {
     throw new Error('.field(name, val) val can not be empty');
   }
+  if ('boolean' === typeof val) {
+    val = '' + val;
+  }
   this._getFormData().append(name, val);
   return this;
 };
diff --git a/package.json b/package.json
index 764cc7873..390309226 100644
--- a/package.json
+++ b/package.json
@@ -45,6 +45,7 @@
     "express-session": "^1.13.0",
     "marked": "^0.3.5",
     "mocha": "^3.1.2",
+    "multer": "^1.2.0",
     "should": "^11.1.1",
     "should-http": "^0.0.4",
     "zuul": "^3.11.1"
diff --git a/test/form.js b/test/form.js
index 5db150e7e..be17e39f1 100644
--- a/test/form.js
+++ b/test/form.js
@@ -3,6 +3,11 @@ var base = setup.uri;
 var should = require('should');
 var request = require('../');
 
+var assert = require('assert');
+if (!assert.deepStrictEqual) assert.deepStrictEqual = assert.deepEqual;
+
+var formDataSupported = setup.NODE || 'undefined' !== FormData;
+
 describe('req.send(Object) as "form"', function(){
   describe('with req.type() set to form', function(){
     it('should send x-www-form-urlencoded data', function(done){
@@ -35,6 +40,67 @@ describe('req.send(Object) as "form"', function(){
 })
 
 describe('req.field', function(){
+  it('allow bools', function(done){
+    if (!formDataSupported) {
+      return done();
+    }
+
+    request
+      .post(base + '/formecho')
+      .field('bools', true)
+      .field('strings', 'true')
+      .end(function(err, res){
+        assert.ifError(err);
+        assert.deepStrictEqual(res.body, {bools:'true', strings:'true'});
+        done();
+      });
+  });
+
+  it('allow objects', function(done){
+    if (!formDataSupported) {
+      return done();
+    }
+
+    request
+      .post(base + '/formecho')
+      .field({bools: true, strings: 'true'})
+      .end(function(err, res){
+        assert.ifError(err);
+        assert.deepStrictEqual(res.body, {bools:'true', strings:'true'});
+        done();
+      });
+  });
+
+  it('works with arrays in objects', function(done){
+    if (!formDataSupported) {
+      return done();
+    }
+
+    request
+      .post(base + '/formecho')
+      .field({numbers: [1,2,3]})
+      .end(function(err, res){
+        assert.ifError(err);
+        assert.deepStrictEqual(res.body, {numbers:['1','2','3']});
+        done();
+      });
+  });
+
+  it('works with arrays', function(done){
+    if (!formDataSupported) {
+      return done();
+    }
+
+    request
+      .post(base + '/formecho')
+      .field('letters', ['a', 'b', 'c'])
+      .end(function(err, res){
+        assert.ifError(err);
+        assert.deepStrictEqual(res.body, {letters: ['a', 'b', 'c']});
+        done();
+      });
+  });
+
   it('throw when empty', function(){
     should.throws(function(){
       request
@@ -48,4 +114,4 @@ describe('req.field', function(){
       .field('name')
     }, /val/);
   });
-});
\ No newline at end of file
+});
diff --git a/test/support/server.js b/test/support/server.js
index d77424211..6d8a21564 100644
--- a/test/support/server.js
+++ b/test/support/server.js
@@ -1,4 +1,5 @@
 var express = require('express');
+var multer = require('multer');
 var bodyParser = require('body-parser');
 var cookieParser = require('cookie-parser');
 var basicAuth = require('basic-auth-connect');
@@ -25,6 +26,15 @@ app.all('/unique', function(req, res){
 });
 
 app.use(bodyParser.urlencoded({ extended: true }));
+app.use(multer().none());
+
+app.all('/formecho', function(req, res){
+  if (!/application\/x-www-form-urlencoded|multipart\/form-data/.test(req.headers['content-type'])) {
+    return res.status(400).end("wrong type");
+  }
+  res.json(req.body);
+});
+
 app.use(bodyParser.json());
 app.use(cookieParser());