diff --git a/lib/application.js b/lib/application.js
index e046726..268db39 100644
--- a/lib/application.js
+++ b/lib/application.js
@@ -165,7 +165,7 @@ app.onerror = function(err){
   assert(err instanceof Error, 'non-error thrown: ' + err);
 
   if (404 == err.status || err.expose) return;
-  if ('test' == this.env) return;
+  if (this.silent) return;
 
   var msg = err.stack || err.toString();
   console.error();
diff --git a/test/application.js b/test/application.js
index acdb9e4..97a1417 100644
--- a/test/application.js
+++ b/test/application.js
@@ -161,8 +161,9 @@ describe('app.onerror(err)', function(){
     done();
   })
 
-  it('should do nothing if env is test', function(done){
+  it('should do nothing if .silent', function(done){
     var app = koa();
+    app.silent = true;
     var err = new Error();
 
     var output = stderr.inspectSync(function() {