diff --git a/pygal/ghost.py b/pygal/ghost.py
index db9e4fd..b191400 100644
--- a/pygal/ghost.py
+++ b/pygal/ghost.py
@@ -142,11 +142,11 @@ class Ghost(object):
         """Render the graph, and return a Flask response"""
         from flask import Response
         return Response(self.render(**kwargs), mimetype='image/svg+xml')
-        
+
     def render_django_response(self, **kwargs):
         """Render the graph, and return a Django response"""
         from django.http import HttpResponse
-        return HttpResponse(self.render(**kwargs), mimetype='image/svg+xml')
+        return HttpResponse(self.render(**kwargs), content_type='image/svg+xml')
 
     def render_to_file(self, filename, **kwargs):
         """Render the graph, and write it to filename"""