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-rw-r--r--debug_toolbar/middleware.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/debug_toolbar/middleware.py b/debug_toolbar/middleware.py
index de78254..0931389 100644
--- a/debug_toolbar/middleware.py
+++ b/debug_toolbar/middleware.py
@@ -99,7 +99,7 @@ class DebugToolbarMiddleware(object):
if response.status_code == 200:
for panel in self.debug_toolbars[request].panels:
panel.process_response(request, response)
- if response['Content-Type'].split(';')[0] in _HTML_TYPES:
+ if response.get('Content-Type', None) and response['Content-Type'].split(';')[0] in _HTML_TYPES:
response.content = replace_insensitive(
smart_unicode(response.content),
self.tag,