diff --git a/release/Makefile b/release/Makefile
index e83755528804..9c92bfaea533 100644
--- a/release/Makefile
+++ b/release/Makefile
@@ -119,6 +119,9 @@ CLEANFILES+=	${I}.xz
 CLEANFILES+=	pkg-stage
 .endif
 CLEANDIRS=	dist ftp disc1 bootonly dvd
+.if !defined(NODOC)
+CLEANDIRS+=    reldoc rdoc
+.endif
 beforeclean:
 	chflags -R noschg .
 .include <bsd.obj.mk>