diff --git a/src/cmd/upas/nfs/imap.c b/src/cmd/upas/nfs/imap.c
index 5249e2e7..fbd232fe 100644
--- a/src/cmd/upas/nfs/imap.c
+++ b/src/cmd/upas/nfs/imap.c
@@ -825,7 +825,8 @@ imapdial(char *server, int mode)
 		fd[0] = dup(p[0], -1);
 		fd[1] = dup(p[0], -1);
 		fd[2] = dup(2, -1);
-		if(threadspawnl(fd, "/usr/local/plan9/bin/rc", "rc", "-c", server, nil) < 0){
+		/* could do better - use get9root for rc(1) path */
+		if(threadspawnl(fd, PLAN9_TARGET "/bin/rc", "rc", "-c", server, nil) < 0){
 			close(p[0]);
 			close(p[1]);
 			close(fd[0]);
diff --git a/src/cmd/upas/nfs/mkfile b/src/cmd/upas/nfs/mkfile
index 7716ab58..a8f2d8e6 100644
--- a/src/cmd/upas/nfs/mkfile
+++ b/src/cmd/upas/nfs/mkfile
@@ -16,3 +16,5 @@ HFILES=a.h box.h imap.h sx.h
 
 <$PLAN9/src/mkone
 
+imap.$O: imap.c
+	$CC $CFLAGS -DPLAN9_TARGET=\"$PLAN9_TARGET\" imap.c