diff --git a/upstart-jobs/nix-daemon.nix b/upstart-jobs/nix-daemon.nix
index a730c9e4d84..84bbdea4f11 100644
--- a/upstart-jobs/nix-daemon.nix
+++ b/upstart-jobs/nix-daemon.nix
@@ -6,8 +6,10 @@
   job = "
     start on startup
     stop on shutdown
-    set NIX_CONF_DIR=/nix/etc/nix
-    respawn ${nix}/bin/nix-worker --daemon > /dev/null 2>&1
+    script
+      export NIX_CONF_DIR=/nix/etc/nix
+      exec ${nix}/bin/nix-worker --daemon > /dev/null 2>&1
+    end script
   ";
 
 }