diff -r 71300ca11b85 Modules/selectmodule.c
--- a/Modules/selectmodule.c	Thu Mar 17 16:48:26 2011 +0800
+++ b/Modules/selectmodule.c	Thu Mar 17 16:56:37 2011 +0600
@@ -916,7 +916,7 @@
 PyDoc_STRVAR(pyepoll_register_doc,
 "register(fd[, eventmask]) -> None\n\
 \n\
-Registers a new fd or modifies an already registered fd.\n\
+Registers a new fd or raises an IOError if the fd is already registered.\n\
 fd is the target file descriptor of the operation.\n\
 events is a bit set composed of the various EPOLL constants; the default\n\
 is EPOLL_IN | EPOLL_OUT | EPOLL_PRI.\n\