diff --git a/datasette/utils/asgi.py b/datasette/utils/asgi.py
index 363f059f..fc9adcff 100644
--- a/datasette/utils/asgi.py
+++ b/datasette/utils/asgi.py
@@ -1,5 +1,4 @@
 import json
-from os import EX_CANTCREAT
 from datasette.utils import MultiParams
 from mimetypes import guess_type
 from urllib.parse import parse_qs, urlunparse, parse_qsl