diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9f25bb4..53a14ead 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 * Changed view engine to use `Map<String, dynamic>`.
 * Remove dependency on `package:json_god` by default.
 * Remove dependency on `package:dart2_constant`.
+* Remove `contentType` argument in `ResponseContext.serialize`.
 
 # 1.1.5+1
 * Patched annoying error that prevented MapServices from working,
diff --git a/lib/src/core/response_context.dart b/lib/src/core/response_context.dart
index cfced7c3..7bb0eb6c 100644
--- a/lib/src/core/response_context.dart
+++ b/lib/src/core/response_context.dart
@@ -2,7 +2,8 @@ library angel_framework.http.response_context;
 
 import 'dart:async';
 import 'dart:convert' show Converter, Encoding;
-import 'dart:io' show BytesBuilder, HttpResponse;
+import 'dart:convert' as c show json;
+import 'dart:io' show BytesBuilder, Cookie, HttpResponse;
 
 import 'package:angel_route/angel_route.dart';
 import 'package:dart2_constant/convert.dart';
@@ -15,9 +16,6 @@ import '../http/http.dart';
 import 'request_context.dart';
 import 'server.dart' show Angel;
 
-final RegExp _contentType =
-    new RegExp(r'([^/\n]+)\/\s*([^;\n]+)\s*(;\s*charset=([^$;\n]+))?');
-
 final RegExp _straySlashes = new RegExp(r'(^/+)|(/+$)');
 
 /// Serializes response data into a String.
@@ -81,7 +79,7 @@ abstract class ResponseContext implements StreamSink<List<int>>, StringSink {
   /// ```dart
   /// app.injectSerializer(JSON.encode);
   /// ```
-  String Function(dynamic) serializer = json.encode;
+  String Function(dynamic) serializer = c.json.encode;
 
   /// This response's status code.
   int get statusCode => _statusCode;
@@ -169,7 +167,9 @@ abstract class ResponseContext implements StreamSink<List<int>>, StringSink {
   }
 
   /// Serializes JSON to the response.
-  void json(value) => serialize(value, contentType: 'application/json');
+  void json(value) => this
+    ..contentType = MediaType('application', 'json')
+    ..serialize(value);
 
   /// Returns a JSONP response.
   ///
@@ -302,21 +302,11 @@ abstract class ResponseContext implements StreamSink<List<int>>, StringSink {
   }
 
   /// Serializes data to the response.
-  ///
-  /// [contentType] can be either a [String], or a [ContentType].
-  bool serialize(value, {contentType}) {
+  bool serialize(value) {
     if (!isOpen) throw closed();
-
     var text = serializer(value);
-
     if (text.isEmpty) return true;
-
-    if (contentType is String)
-      headers['content-type'] = contentType;
-    else if (contentType is ContentType) this.contentType = contentType;
-
     write(text);
-
     end();
     return false;
   }
diff --git a/lib/src/core/server.dart b/lib/src/core/server.dart
index a0df148f..05f4cea2 100644
--- a/lib/src/core/server.dart
+++ b/lib/src/core/server.dart
@@ -4,6 +4,7 @@ import 'dart:async';
 import 'dart:collection' show HashMap;
 import 'dart:convert';
 import 'dart:io';
+
 import 'package:angel_container/angel_container.dart';
 import 'package:angel_container/mirrors.dart';
 import 'package:angel_http_exception/angel_http_exception.dart';
@@ -11,6 +12,7 @@ import 'package:angel_route/angel_route.dart';
 import 'package:combinator/combinator.dart';
 import 'package:logging/logging.dart';
 import 'package:tuple/tuple.dart';
+
 import '../http/http.dart';
 import 'angel_base.dart';
 import 'request_context.dart';
@@ -305,8 +307,7 @@ class Angel extends AngelBase {
       else if (result is bool) {
         return result;
       } else if (result != null) {
-        return res.serialize(result,
-            contentType: res.headers['content-type'] ?? 'application/json');
+        return res.serialize(result);
       } else
         return res.isOpen;
     });
diff --git a/lib/src/core/typed_service.dart b/lib/src/core/typed_service.dart
index f3a5ba81..d352deec 100644
--- a/lib/src/core/typed_service.dart
+++ b/lib/src/core/typed_service.dart
@@ -1,5 +1,6 @@
 import 'dart:async';
 import 'dart:mirrors';
+
 import '../../common.dart';
 import 'service.dart';
 
@@ -54,9 +55,11 @@ class TypedService<T> extends Service {
   }
 
   serialize(x) {
-    if (x is Model)
-      return json.encodeObject(x);
-    else if (x is Map)
+    // TODO: Custom serializer, i.e. json_god?
+//    if (x is Model)
+//      return json.encodeObject(x);
+//    else
+    if (x is Map)
       return x;
     else if (x is Iterable)
       return x.map(serialize).toList();
diff --git a/test/hooked_test.dart b/test/hooked_test.dart
index 677deb8c..539ac1c9 100644
--- a/test/hooked_test.dart
+++ b/test/hooked_test.dart
@@ -1,3 +1,4 @@
+import 'dart:convert';
 import 'dart:io';
 import 'package:angel_container/mirrors.dart';
 import 'package:angel_framework/angel_framework.dart';
@@ -74,7 +75,7 @@ main() {
         body: json.encode({"arbitrary": "data"}),
         headers: headers as Map<String, String>);
     print(response.body);
-    Map result = god.deserialize(response.body);
+    Map result = json.decode(response.body);
     expect(result["hello"], equals("hooked world"));
   });
 
@@ -92,7 +93,7 @@ main() {
 
     var response = await client.get("$url/todos");
     print(response.body);
-    List result = god.deserialize(response.body);
+    List result = json.decode(response.body);
     expect(result[0]["angel"], equals("framework"));
   });
 
@@ -115,7 +116,7 @@ main() {
     var response = await client.get('$url/books');
     print(response.body);
 
-    var result = god.deserialize(response.body);
+    var result = json.decode(response.body);
     expect(result, isList);
     expect(result, isNotEmpty);
     expect(result[0], equals({'foo': 'bar'}));
diff --git a/test/serialize_test.dart b/test/serialize_test.dart
index 2e027d30..48ee42f3 100644
--- a/test/serialize_test.dart
+++ b/test/serialize_test.dart
@@ -1,7 +1,9 @@
 import 'dart:io';
+
 import 'package:angel_container/mirrors.dart';
 import 'package:angel_framework/angel_framework.dart';
 import 'package:http/http.dart' as http;
+import 'package:http_parser/http_parser.dart';
 import 'package:test/test.dart';
 
 main() {
@@ -13,10 +15,10 @@ main() {
   setUp(() async {
     app = new Angel(MirrorsReflector())
       ..get('/foo', () => {'hello': 'world'})
-      ..get(
-          '/bar',
-          (req, ResponseContext res) =>
-              res.serialize({'hello': 'world'}, contentType: 'text/html'));
+      ..get('/bar', (req, ResponseContext res) async {
+        res.contentType = new MediaType('text', 'html');
+        await res.serialize({'hello': 'world'});
+      });
     client = new http.Client();
 
     server = await new AngelHttp(app).startServer();
diff --git a/test/services_test.dart b/test/services_test.dart
index 2f0a8714..7884ed85 100644
--- a/test/services_test.dart
+++ b/test/services_test.dart
@@ -54,9 +54,9 @@ main() {
       var response = await client.post("$url/todos",
           headers: headers as Map<String, String>, body: postData);
       expect(response.statusCode, 201);
-      var json = god.deserialize(response.body);
-      print(json);
-      expect(json['text'], equals('Hello, world!'));
+      var jsons = json.decode(response.body);
+      print(jsons);
+      expect(jsons['text'], equals('Hello, world!'));
     });
 
     test('can fetch data', () async {
@@ -65,9 +65,9 @@ main() {
           headers: headers as Map<String, String>, body: postData);
       var response = await client.get("$url/todos/0");
       expect(response.statusCode, 200);
-      var json = god.deserialize(response.body);
-      print(json);
-      expect(json['text'], equals('Hello, world!'));
+      var jsons = json.decode(response.body);
+      print(jsons);
+      expect(jsons['text'], equals('Hello, world!'));
     });
 
     test('can modify data', () async {
@@ -78,9 +78,9 @@ main() {
       var response = await client.patch("$url/todos/0",
           headers: headers as Map<String, String>, body: postData);
       expect(response.statusCode, 200);
-      var json = god.deserialize(response.body);
-      print(json);
-      expect(json['text'], equals('modified'));
+      var jsons = json.decode(response.body);
+      print(jsons);
+      expect(jsons['text'], equals('modified'));
     });
 
     test('can overwrite data', () async {
@@ -91,10 +91,10 @@ main() {
       var response = await client.post("$url/todos/0",
           headers: headers as Map<String, String>, body: postData);
       expect(response.statusCode, 200);
-      var json = god.deserialize(response.body);
-      print(json);
-      expect(json['text'], equals(null));
-      expect(json['over'], equals('write'));
+      var jsons = json.decode(response.body);
+      print(jsons);
+      expect(jsons['text'], equals(null));
+      expect(jsons['over'], equals('write'));
     });
 
     test('can delete data', () async {
@@ -105,7 +105,7 @@ main() {
           .then((r) => json.decode(r.body));
       var response = await client.delete("$url/todos/${created['id']}");
       expect(response.statusCode, 200);
-      var json_ = god.deserialize(response.body);
+      var json_ = json.decode(response.body);
       print(json_);
       expect(json_['text'], equals('Hello, world!'));
     });