diff --git a/tailbone/views/reports.py b/tailbone/views/reports.py
index 318d51ee..445b3a39 100644
--- a/tailbone/views/reports.py
+++ b/tailbone/views/reports.py
@@ -164,9 +164,9 @@ class InventoryWorksheet(View):
             department = departments.get(self.request.params['department'])
             if department:
                 body = self.write_report(department)
-                response = Response(content_type=b'text/html')
-                response.headers[b'Content-Length'] = len(body)
-                response.headers[b'Content-Disposition'] = b'attachment; filename=inventory.html'
+                response = Response(content_type=str('text/html'))
+                response.headers[str('Content-Length')] = len(body)
+                response.headers[str('Content-Disposition')] = str('attachment; filename=inventory.html')
                 response.text = body
                 return response