diff --git a/share/doc/psd/23.rpc/rpc.prog.ms b/share/doc/psd/23.rpc/rpc.prog.ms
index a26998c125e..54fd2d5cb40 100644
--- a/share/doc/psd/23.rpc/rpc.prog.ms
+++ b/share/doc/psd/23.rpc/rpc.prog.ms
@@ -71,7 +71,7 @@ manual page.
 .I "The Highest Layer:"
 .IX RPC "The Highest Layer"
 The highest layer is totally transparent to the operating system,
-machine and network upon which is run.  It's probably best to
+machine and network upon which it is run.  It's probably best to
 think of this level as a way of
 .I using
 RPC, rather than as