diff --git a/configure.ac b/configure.ac
index 32eae4fe..878fbf2c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -17,7 +17,7 @@ AM_CONDITIONAL([USE_GIT_VERSION], [test -n "$GIT" && test -e ".git/index" ])
 # Derived from the Avahi configure.ac file
 # Specifying the OS type, defaulting to linux.
 #
-AC_ARG_WITH(os, AS_HELP_STRING([--with-os=OSType],[Specify the distribution to target: One of linux freebsd or darwin]))
+AC_ARG_WITH(os, AS_HELP_STRING([--with-os=OSType],[Specify the distribution to target: One of linux, freebsd, openbsd or darwin]))
 if test "z$with_os" = "z"; then
   with_os="linux"
 fi