diff --git a/lib/libopenbsd/README b/lib/libopenbsd/README
new file mode 100644
index 000000000000..6fdba4a9945b
--- /dev/null
+++ b/lib/libopenbsd/README
@@ -0,0 +1,7 @@
+$FreeBSD$
+
+libopenbsd is a thin compatibility layer intended to allow a limited
+set of OpenBSD software to compile as part of the FreeBSD build with
+little or no modifiction.  It is built as a static library and not
+installed for general use.  Likewise, its header files are not
+installed.