diff --git a/extra/opendoas/build b/extra/opendoas/build
index fab6335a..db318468 100755
--- a/extra/opendoas/build
+++ b/extra/opendoas/build
@@ -11,4 +11,4 @@ sed -i '/chown/d' bsd.prog.mk
 make
 make DESTDIR="$1" install
 
-install -D doas.conf "$1/etc/doas.conf"
+install -Dm644 doas.conf "$1/etc/doas.conf"