diff --git a/Makefile.in b/Makefile.in
index 24d4150ef0..77d1af2c4f 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -27,7 +27,7 @@ DISTFILES =	Makefile.in README \
 		install-sh ltconfig ltmain.sh \
 		bin lib make \
 		version
-DOCDIRS =	draft misc rfc
+DOCDIRS =	arm draft misc rfc
 
 @BIND9_MAKE_RULES@