diff -r b0b19d61d79a -r 92b8c79b34c2 hgext/mq.py
--- a/hgext/mq.py	Thu Mar 04 14:23:54 2010 +0100
+++ b/hgext/mq.py	Fri Mar 05 10:49:56 2010 +0100
@@ -813,8 +813,7 @@
     _reserved = ('series', 'status', 'guards')
     def check_reserved_name(self, name):
         if (name in self._reserved or name.startswith('.hg')
-            or name.startswith('.mq') or '#' in name
-            or (os.name == 'nt' and ':' in name)):
+            or name.startswith('.mq') or '#' in name or ':' in name):
             raise util.Abort(_('"%s" cannot be used as the name of a patch')
                              % name)