diff --git a/src/feat/web/webserver.py b/src/feat/web/webserver.py
index 411b1732..0131eef5 100644
--- a/src/feat/web/webserver.py
+++ b/src/feat/web/webserver.py
@@ -1596,7 +1596,7 @@ class Response(log.Logger):
 
     implements(IWebResponse, document.IWritableDocument)
 
-    strict_negotiation = True
+    strict_negotiation = False
 
     # map encodings unknown to Python but used by browsers to what Python
     # knows how to handle