diff --git a/nixos/modules/services/audio/roon-server.nix b/nixos/modules/services/audio/roon-server.nix
index 4764ee3e598f..74cae909f5db 100644
--- a/nixos/modules/services/audio/roon-server.nix
+++ b/nixos/modules/services/audio/roon-server.nix
@@ -40,6 +40,7 @@ in {
       wantedBy = [ "multi-user.target" ];
 
       environment.ROON_DATAROOT = "/var/lib/${name}";
+      environment.ROON_ID_DIR = "/var/lib/${name}";
 
       serviceConfig = {
         ExecStart = "${pkgs.roon-server}/bin/RoonServer";