diff --git a/usr.sbin/bsdinstall/scripts/pkgbase.in b/usr.sbin/bsdinstall/scripts/pkgbase.in
--- a/usr.sbin/bsdinstall/scripts/pkgbase.in
+++ b/usr.sbin/bsdinstall/scripts/pkgbase.in
@@ -355,6 +355,10 @@
 	if not os.execute(pkg .. "install -U -y -r FreeBSD-base " .. packages) then
 		os.exit(1)
 	end
+
+	-- Enable the FreeBSD-base repository for this system.
+	assert(os.execute("mkdir -p " .. chroot .. "/usr/local/etc/pkg/repos"))
+	assert(os.execute("echo 'FreeBSD-base: { enabled: yes }' > " .. chroot .. "/usr/local/etc/pkg/repos/FreeBSD.conf"))
 end
 
 pkgbase()