diff --git a/tailbone/views/master.py b/tailbone/views/master.py
index 5a36bcb9..68ae7615 100644
--- a/tailbone/views/master.py
+++ b/tailbone/views/master.py
@@ -1935,11 +1935,16 @@ class MasterView(View):
         for obj in results:
             writer.writerow(self.get_csv_row(obj, fields))
         response = self.request.response
-        response.body = data.getvalue()
+        if six.PY3:
+            response.text = data.getvalue()
+            response.content_type = 'text/csv'
+            response.content_disposition = 'attachment; filename={}.csv'.format(self.get_grid_key())
+        else:
+            response.body = data.getvalue()
+            response.content_type = b'text/csv'
+            response.content_disposition = b'attachment; filename={}.csv'.format(self.get_grid_key())
         data.close()
         response.content_length = len(response.body)
-        response.content_type = b'text/csv'
-        response.content_disposition = b'attachment; filename={}.csv'.format(self.get_grid_key())
         return response
 
     def results_xlsx(self):