diff --git a/lib/request/basic.py b/lib/request/basic.py
index 2506c5d50..1a7b870df 100644
--- a/lib/request/basic.py
+++ b/lib/request/basic.py
@@ -119,7 +119,7 @@ def checkCharEncoding(encoding):
     # http://philip.html5.org/data/charsets-2.html
     if encoding in translate:
         encoding = translate[encoding]
-    elif encoding in ('null', '{charset}'):
+    elif encoding in ('null', '{charset}', '*'):
         return None
 
     # http://www.iana.org/assignments/character-sets