diff --git a/djdev_panel/middleware.py b/djdev_panel/middleware.py
index 37cfb24..de1ad62 100644
--- a/djdev_panel/middleware.py
+++ b/djdev_panel/middleware.py
@@ -172,6 +172,9 @@ def process_view(self, request, view_func, view_args, view_kwargs):
 
     def process_template_response(self, request, response):
 
+        if not hasattr(response, 'context_data'):
+            return response
+
         if response.context_data is None:
             return response