diff --git a/objectifier-module.nix b/objectifier-module.nix
index 1003189..5a96a1f 100644
--- a/objectifier-module.nix
+++ b/objectifier-module.nix
@@ -90,7 +90,7 @@ in {
         Restart = "on-failure";
         RestartSec = "5s";
         Type = "simple";
-        PIDFile = "/run/objectifier.pid";
+        PIDFile = ''"$RUNTIME_DIRECTORY/objectifier.pid"'';
         ExecStart = let
           bindClause = concatStringsSep " "
             (map (addr: "--bind ${addr}:${toString cfg.port}")
@@ -99,7 +99,7 @@ in {
           "${pkgs.objectifier}/bin/objectifier"
           bindClause
           "--workers ${toString cfg.workers}"
-          "--pid /run/objectifier.pid"
+          ''--pid "$RUNTIME_DIRECTORY/objectifier.pid"''
         ]);
       };
     };