diff --git a/gnu/usr.bin/binutils/gasp/Makefile b/gnu/usr.bin/binutils/gasp/Makefile
index a08909fd0ce..b432ccd7d5d 100644
--- a/gnu/usr.bin/binutils/gasp/Makefile
+++ b/gnu/usr.bin/binutils/gasp/Makefile
@@ -6,6 +6,8 @@
 
 .PATH: ${SRCDIR}/gas
 
+SUBDIR=		doc
+
 PROG=		gasp
 SRCS+=		gasp.c macro.c sb.c hash.c
 CFLAGS+=	-I${SRCDIR}