diff --git a/nixos/modules/services/misc/orthanc.nix b/nixos/modules/services/misc/orthanc.nix
index 4a5d3876494e..d1a8f97ac006 100644
--- a/nixos/modules/services/misc/orthanc.nix
+++ b/nixos/modules/services/misc/orthanc.nix
@@ -83,7 +83,7 @@ in
   };
 
   config = lib.mkIf cfg.enable {
-    services.orthanc.settings = options.services.orthanc.settings.default;
+    services.orthanc.settings = opt.settings.default;
 
     systemd.services.orthanc = {
       description = "Orthanc is a lightweight, RESTful DICOM server for healthcare and medical research";