diff --git a/games/hack/Makefile b/games/hack/Makefile
index abcb487193e3..439b06c060c2 100644
--- a/games/hack/Makefile
+++ b/games/hack/Makefile
@@ -29,11 +29,11 @@ makedefs: makedefs.c
 	${CC} ${CFLAGS} -o ${.TARGET} ${.CURDIR}/${.PREFIX}.c
 
 beforeinstall:
-	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m 666 /dev/null \
+	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m 664 /dev/null \
 	    ${DESTDIR}/var/games/hackdir/perm
-	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m 666 /dev/null \
+	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m 664 /dev/null \
 	    ${DESTDIR}/var/games/hackdir/record
-	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m 666 ${.CURDIR}/rumors \
+	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m 664 ${.CURDIR}/rumors \
 	    ${DESTDIR}/var/games/hackdir/rumors
 	${INSTALL} -c -o ${BINOWN} -g ${BINGRP} -m ${NOBINMODE} \
 		${.CURDIR}/help  ${.CURDIR}/hh ${.CURDIR}/data \