diff --git a/install/sd-shutdown b/install/sd-shutdown
index cd4686f..0561abd 100644
--- a/install/sd-shutdown
+++ b/install/sd-shutdown
@@ -1,6 +1,7 @@
 #!/bin/bash
 
 build() {
+    add_systemd_unit mkinitcpio-generate-shutdown-ramfs.service
     add_binary /usr/lib/systemd/systemd-shutdown /shutdown
 
     if type -P kexec >/dev/null; then
@@ -12,6 +13,7 @@ help() {
     cat <<HELPEOF
 This hook adds systemd-shutdown to the initramfs. This is only
 if the image is extracted to /run/initramfs before shutdown.
+Requires the systemd hook.
 HELPEOF
 }