diff --git a/nixos/modules/services/security/tor.nix b/nixos/modules/services/security/tor.nix
index 04b065f6ae4b..bc79d9f2a590 100644
--- a/nixos/modules/services/security/tor.nix
+++ b/nixos/modules/services/security/tor.nix
@@ -17,7 +17,7 @@ let
       GeoIPv6File ${pkgs.tor.geoip}/share/tor/geoip6
     ''}
 
-    ${optint "ControlPort" (toString cfg.controlPort)}
+    ${optint "ControlPort" cfg.controlPort}
   ''
   # Client connection config
   + optionalString cfg.client.enable  ''