diff --git a/setup.py b/setup.py
index fc3245c..761d061 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 
 setup(
     name='tremolo',
-    version='0.0.209',
+    version='0.0.300',
     license='MIT',
     author='nggit',
     author_email='contact@anggit.com',
diff --git a/tremolo/__init__.py b/tremolo/__init__.py
index 9cb8eaa..75f964f 100644
--- a/tremolo/__init__.py
+++ b/tremolo/__init__.py
@@ -1,4 +1,4 @@
-__version__ = '0.0.209'
+__version__ = '0.0.300'
 
 from .tremolo import Tremolo  # noqa: E402
 from . import exceptions  # noqa: E402,F401
diff --git a/tremolo/lib/http_protocol.py b/tremolo/lib/http_protocol.py
index d819c64..c315134 100644
--- a/tremolo/lib/http_protocol.py
+++ b/tremolo/lib/http_protocol.py
@@ -227,7 +227,7 @@ async def handle_exception(self, exc):
 
         if self._response is not None:
             self._response.set_status(exc.code, exc.message)
-            self._response.set_content_type(exc.message)
+            self._response.set_content_type(exc.content_type)
             await self._response.end(data, keepalive=False)
 
     async def _handle_request_header(self, data, header_size):