README: mention missing support for OpenBSD

diff --git a/README b/README
index 5b30220060c95a9dd48f9dacd7dc43b041eec503..f6eb3de5b1e95dc932158ab99bc58aa16ec511d5 100644 (file)
--- a/README
+++ b/README
@@ -55,6 +55,8 @@ The shell is not used when running the program.
 BUGS
 ----
 
+Doesn't work on OpenBSD which has no support for utmpx.h.
+
 If you find any bugs not mentioned in this document please report them to
 <simon@ruderich.org> with wall-notify in the subject.