diff --git a/keyd.service.in b/keyd.service.in
index a4c90bb..57a40a2 100644
--- a/keyd.service.in
+++ b/keyd.service.in
@@ -1,5 +1,6 @@
 [Unit]
 Description=key remapping daemon
+Documentation=man:keyd(1)
 
 [Service]
 Type=simple
diff --git a/src/vkbd/usb-gadget.service.in b/src/vkbd/usb-gadget.service.in
index a762a66..84e7291 100644
--- a/src/vkbd/usb-gadget.service.in
+++ b/src/vkbd/usb-gadget.service.in
@@ -1,5 +1,6 @@
 [Unit]
 Description=usb gadget setup
+Documentation=man:keyd(1)
 Requires=systemd-modules-load.service,keyd.service
 Before=keyd.service
 After=systemd-modules-load.service