diff --git a/nixos/modules/services/admin/oxidized.nix b/nixos/modules/services/admin/oxidized.nix
index da81be3f23e..885eaed1de6 100644
--- a/nixos/modules/services/admin/oxidized.nix
+++ b/nixos/modules/services/admin/oxidized.nix
@@ -111,6 +111,7 @@ in
         Restart  = "always";
         WorkingDirectory = cfg.dataDir;
         KillSignal = "SIGKILL";
+        PIDFile = "${cfg.dataDir}.config/oxidized/pid";
       };
     };
   };