diff --git a/docs/api/index.md b/docs/api/index.md
index 3c34165..8b7d82d 100644
--- a/docs/api/index.md
+++ b/docs/api/index.md
@@ -79,7 +79,6 @@ app.listen(3000);
   - `app.env` defaulting to the __NODE_ENV__ or "development"
   - `app.proxy` when true proxy header fields will be trusted
   - `app.subdomainOffset` offset of `.subdomains` to ignore [2]
-  - `app.jsonSpaces` default JSON response spaces [2]
   - `app.outputErrors` output err.stack to stderr [false in "test" environment]
 
 ## app.listen(...)
diff --git a/docs/api/response.md b/docs/api/response.md
index 399d187..86458f6 100644
--- a/docs/api/response.md
+++ b/docs/api/response.md
@@ -11,7 +11,7 @@
   Response header object.
 
 ### res.socket
-  
+
   Request socket.
 
 ### res.status
@@ -130,15 +130,6 @@ so you can make a correction.
 
   The Content-Type is defaulted to application/json.
 
-#### Notes
-
-  To alter the JSON response formatting use the `app.jsonSpaces`
-  setting, for example to compress JSON responses set:
-
-```js
-app.jsonSpaces = 0;
-```
-
 ### res.get(field)
 
   Get a response header field value with case-insensitive `field`.
@@ -257,7 +248,7 @@ this.response.etag = crypto.createHash('md5').update(this.body).digest('hex');
   Append `val` to header `field`.
 
 ### res.vary(field)
-  
+
   Vary on `field`.
 
 
diff --git a/lib/application.js b/lib/application.js
index 4d9df2e..5f8744c 100644
--- a/lib/application.js
+++ b/lib/application.js
@@ -40,7 +40,6 @@ function Application() {
   this.outputErrors = 'test' != this.env;
   this.subdomainOffset = 2;
   this.poweredBy = true;
-  this.jsonSpaces = 2;
   this.middleware = [];
   this.context = Object.create(context);
   this.request = Object.create(request);
@@ -194,7 +193,7 @@ function *respond(next){
   }
 
   // body: json
-  body = JSON.stringify(body, null, this.app.jsonSpaces);
+  body = JSON.stringify(body);
   this.length = Buffer.byteLength(body);
   if (head) return res.end();
   res.end(body);
diff --git a/test/application.js b/test/application.js
index 6b81549..dafc068 100644
--- a/test/application.js
+++ b/test/application.js
@@ -409,26 +409,7 @@ describe('app.respond', function(){
       request(server)
       .get('/')
       .expect('Content-Type', 'application/json')
-      .expect('{\n  "hello": "world"\n}', done);
-    })
-
-    describe('when app.jsonSpaces is altered', function(){
-      it('should reflect in the formatting', function(done){
-        var app = koa();
-
-        app.jsonSpaces = 0;
-
-        app.use(function *(){
-          this.body = { hello: 'world' };
-        });
-
-        var server = app.listen();
-
-        request(server)
-        .get('/')
-        .expect('Content-Type', 'application/json')
-        .expect('{"hello":"world"}', done);
-      })
+      .expect('{"hello":"world"}', done);
     })
   })