diff --git a/objectifier-module.nix b/objectifier-module.nix
index 6db85c6..5df95ca 100644
--- a/objectifier-module.nix
+++ b/objectifier-module.nix
@@ -74,15 +74,15 @@ in {
         Type = "simple";
         PIDFile = "/run/objectifier.pid";
         ExecStart = let
-          bindClause =
-            map (addr: "--bind ${addr}:${cfg.port}") cfg.listen-addresses;
+          bindClause = concatStringsSep " "
+            (map (addr: "--bind ${addr}:${cfg.port}") cfg.listen-addresses);
         in (concatStringsSep " " [
           "gunicorn"
           bindClause
           "--workers ${cfg.workers}"
           "-k uvicorn.workers.UvicornWorker"
-          "objectifier:app"
           "--pid /run/objectifier.pid"
+          "objectifier:app"
         ]);
       };
     };