diff --git a/spec/fakeRequestSpec.js b/spec/fakeRequestSpec.js
index 0740b94..4b7b4c8 100644
--- a/spec/fakeRequestSpec.js
+++ b/spec/fakeRequestSpec.js
@@ -597,9 +597,11 @@ describe('FakeRequest', function() {
 
     if (typeof window.Document !== 'undefined') {
       expect(request.responseXML instanceof window.Document).toBe(true);
+      expect(request.response instanceof window.Document).toBe(true);
     } else {
       // IE 8
       expect(request.responseXML instanceof window.ActiveXObject).toBe(true);
+      expect(request.response instanceof window.ActiveXObject).toBe(true);
     }
   });
 
@@ -612,9 +614,11 @@ describe('FakeRequest', function() {
 
     if (typeof window.Document !== 'undefined') {
       expect(request.responseXML instanceof window.Document).toBe(true);
+      expect(request.response instanceof window.Document).toBe(true);
     } else {
       // IE 8
       expect(request.responseXML instanceof window.ActiveXObject).toBe(true);
+      expect(request.response instanceof window.ActiveXObject).toBe(true);
     }
   });
 
@@ -627,9 +631,41 @@ describe('FakeRequest', function() {
 
     if (typeof window.Document !== 'undefined') {
       expect(request.responseXML instanceof window.Document).toBe(true);
+      expect(request.response instanceof window.Document).toBe(true);
     } else {
       // IE 8
       expect(request.responseXML instanceof window.ActiveXObject).toBe(true);
+      expect(request.response instanceof window.ActiveXObject).toBe(true);
     }
   });
+
+  it('defaults the response attribute to the responseText', function() {
+    var request = new this.FakeRequest();
+    request.open();
+    request.send();
+
+    request.respondWith({ status: 200, responseText: 'foo' });
+
+    expect(request.response).toEqual('foo');
+  });
+
+  it('has a text response when the responseType is blank', function() {
+    var request = new this.FakeRequest();
+    request.open();
+    request.send();
+
+    request.respondWith({ status: 200, responseText: 'foo', responseType: '' });
+
+    expect(request.response).toEqual('foo');
+  });
+
+  it('has a text response when the responseType is text', function() {
+    var request = new this.FakeRequest();
+    request.open();
+    request.send();
+
+    request.respondWith({ status: 200, responseText: 'foo', responseType: 'text' });
+
+    expect(request.response).toEqual('foo');
+  });
 });
diff --git a/spec/mock-ajax-toplevel-spec.js b/spec/mock-ajax-toplevel-spec.js
index 7c23c36..b88f65e 100644
--- a/spec/mock-ajax-toplevel-spec.js
+++ b/spec/mock-ajax-toplevel-spec.js
@@ -22,8 +22,8 @@ describe("Jasmine Mock Ajax (for toplevel)", function() {
     complete = jasmine.createSpy("onComplete");
 
     onreadystatechange = function() {
-      if (this.readyState == (this.DONE || 4)) { // IE 8 doesn't support DONE
-        if (this.status == 200) {
+      if (this.readyState === (this.DONE || 4)) { // IE 8 doesn't support DONE
+        if (this.status === 200) {
           success(this.responseText, this.textStatus, this);
         } else {
           error(this, this.textStatus, '');
@@ -211,7 +211,7 @@ describe("Jasmine Mock Ajax (for toplevel)", function() {
         client = new fakeGlobal.XMLHttpRequest();
         client.onreadystatechange = onreadystatechange;
         client.open("GET", "example.com/someApi");
-        client.setRequestHeader("Content-Type", "application/json")
+        client.setRequestHeader("Content-Type", "application/json");
         client.send();
 
         request = mockAjax.requests.mostRecent();
@@ -462,7 +462,7 @@ function sharedAjaxResponseBehaviorForZepto_Success(context) {
     });
 
     it("should have the expected xhr2 response", function() {
-      var expected = context.response || context.responseType == 'json' ? JSON.parse(context.responseText) : context.responseText;
+      var expected = context.response || context.responseType === 'json' ? JSON.parse(context.responseText) : context.responseText;
       expect(xhr.response).toEqual(expected);
     });
 
@@ -492,7 +492,7 @@ function sharedAjaxResponseBehaviorForZepto_Failure(context) {
     });
 
     it("should have the expected xhr2 response", function() {
-      var expected = context.response || xhr.responseType == 'json' ? JSON.parse(xhr.responseText) : xhr.responseText;
+      var expected = context.response || xhr.responseType === 'json' ? JSON.parse(xhr.responseText) : xhr.responseText;
       expect(xhr.response).toEqual(expected);
     });
 
diff --git a/src/fakeRequest.js b/src/fakeRequest.js
index 32bc4e0..402afcf 100644
--- a/src/fakeRequest.js
+++ b/src/fakeRequest.js
@@ -38,6 +38,16 @@ getJasmineRequireObj().AjaxFakeRequest = function() {
     };
   }
 
+  function unconvertibleResponseTypeMessage(type) {
+    var msg = [
+      "Can't build XHR.response for XHR.responseType of '",
+      type,
+      "'.",
+      "XHR.response must be explicitly stubbed"
+    ];
+    return msg.join(' ');
+  }
+
   function fakeRequest(global, requestTracker, stubTracker, paramParser) {
     function FakeXMLHttpRequest() {
       requestTracker.track(this);
@@ -218,23 +228,11 @@ getJasmineRequireObj().AjaxFakeRequest = function() {
           case "json":
             return JSON.parse(this.responseText);
           case "arraybuffer":
-            var msg = [
-              "Can't build XHR.response for XHR.responseType of 'arraybuffer'.",
-              "XHR.response must be explicitly stubbed"
-            ];
-            throw msg.join(' ');
+            throw unconvertibleResponseTypeMessage('arraybuffer');
           case "blob":
-            var msg = [
-              "Can't build XHR.response for XHR.responseType of 'blob'.",
-              "XHR.response must be explicitly stubbed"
-            ];
-            throw msg.join(' ');
+            throw unconvertibleResponseTypeMessage('blob');
           case "document":
-            var msg = [
-              "Can't build XHR.response for XHR.responseType of 'document'.",
-              "XHR.response must be explicitly stubbed"
-            ];
-            throw msg.join(' ');
+            return this.responseXML;
         }
       },
 
@@ -249,13 +247,16 @@ getJasmineRequireObj().AjaxFakeRequest = function() {
         this.responseType = response.responseType || "";
         this.readyState = 4;
         this.responseHeaders = normalizeHeaders(response.responseHeaders, response.contentType);
+        this.responseXML = getResponseXml(response.responseText, this.getResponseHeader('content-type') || '');
+        if (this.responseXML) {
+          this.responseType = 'document';
+        }
 
         if ('response' in response) {
           this.response = response.response;
         } else {
           this.response = this.responseValue();
         }
-        this.responseXML = getResponseXml(response.responseText, this.getResponseHeader('content-type') || '');
 
         this.onreadystatechange();
         this.events.progress();