diff --git a/modules/homelab/services/immich/default.nix b/modules/homelab/services/immich/default.nix
index 4b07d40..140aceb 100644
--- a/modules/homelab/services/immich/default.nix
+++ b/modules/homelab/services/immich/default.nix
@@ -67,7 +67,7 @@ in
     };
 
     # override umask to make permissions work out
-    systemd.services.${service}-server.serviceConfig = {
+    systemd.services."${toString service}-server".serviceConfig = {
       UMask = lib.mkForce "0007";
     };