diff --git a/developer/services/admin-api.md b/developer/services/admin-api.md
index 8fa12417..0087bcaf 100644
--- a/developer/services/admin-api.md
+++ b/developer/services/admin-api.md
@@ -106,6 +106,7 @@ to set the policy using current mechanism.
 | `admin.vm.firewall.Get`                | vm        | -         | -                                         | `<rule>\n`                                                | rules syntax as in [firewall interface](/doc/vm-interface/#firewall-rules-in-4x) with addition of `expire=` and `comment=` options; `comment=` (if present) must be the last option
 | `admin.vm.firewall.Set`                | vm        | -         | `<rule>\n`                                | -                                                         | set firewall rules, see `admin.vm.firewall.Get` for syntax
 | `admin.vm.firewall.Reload`             | vm        | -         | -                                         | -                                                         | force reload firewall without changing any rule
+| `admin.vm.deviceclass.List`            | `dom0`    | -         | -                                         | `<class>\n`                                               |
 | `admin.vm.device.<class>.Attach`       | vm        | device    | options                                   | -                                                         | `device` is in form `<backend-name>+<device-ident>` <br/>optional options given in `key=value` format, separated with spaces; <br/>options can include `persistent=True` to "persistently" attach the device (default is temporary)
 | `admin.vm.device.<class>.Detach`       | vm        | device    | -                                         | -                                                         | `device` is in form `<backend-name>+<device-ident>`
 | `admin.vm.device.<class>.Set.persistent`| vm       | device    | `True`\|`False`                            | -                                                         | `device` is in form `<backend-name>+<device-ident>`