diff --git a/lib/src/http/server.dart b/lib/src/http/server.dart
index 332a01fc..db056698 100644
--- a/lib/src/http/server.dart
+++ b/lib/src/http/server.dart
@@ -13,6 +13,7 @@ class Angel extends Routable {
 
   /// Default error handler, show HTML error page
   var _errorHandler = (AngelHttpException e, req, ResponseContext res) {
+    res.header(HttpHeaders.CONTENT_TYPE, ContentType.HTML.toString());
     res.status(e.statusCode);
     res.write("<DOCTYPE html><html><head><title>${e.message}</title>");
     res.write("</head><body><h1>${e.message}</h1><ul>");
diff --git a/pubspec.yaml b/pubspec.yaml
index 99313516..cc1b4d2e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: angel_framework
-version: 0.0.0-dev.11
+version: 0.0.0-dev.12
 description: Core libraries for the Angel framework.
 author: Tobe O <thosakwe@gmail.com>
 homepage: https://github.com/angel-dart/angel_framework
