diff --git a/hosts/by-name/servo/services/matrix/irc.nix b/hosts/by-name/servo/services/matrix/irc.nix
index 56ba7bd3..c4e64e16 100644
--- a/hosts/by-name/servo/services/matrix/irc.nix
+++ b/hosts/by-name/servo/services/matrix/irc.nix
@@ -3,8 +3,7 @@
 {
   sane.persist.sys.plaintext = [
     # TODO: mode?
-    # user and group are both "matrix-appservice-irc"
-    { user = "993"; group = "992"; directory = "/var/lib/matrix-appservice-irc"; }
+    { user = "matrix-appservice-irc"; group = "matrix-appservice-irc"; directory = "/var/lib/matrix-appservice-irc"; }
   ];
 
   services.matrix-synapse.settings.app_service_config_files = [
diff --git a/hosts/common/ids.nix b/hosts/common/ids.nix
index e47789c1..b2f023d9 100644
--- a/hosts/common/ids.nix
+++ b/hosts/common/ids.nix
@@ -15,6 +15,8 @@
   sane.ids.acme.gid = 996;
   sane.ids.pleroma.uid = 997;
   sane.ids.acme.uid = 998;
+  sane.ids.matrix-appservice-irc.uid = 993;
+  sane.ids.matrix-appservice-irc.gid = 992;
 
   # greetd (used by sway)
   sane.ids.greeter.uid = 999;