diff --git a/doctrine/lib/mk-module.nix b/doctrine/lib/mk-module.nix
index f76ccfe..e72ca08 100644
--- a/doctrine/lib/mk-module.nix
+++ b/doctrine/lib/mk-module.nix
@@ -40,9 +40,13 @@ in {
       }
     ]));
 
-  options.${prefix}.${name} =
-    lib.optionalAttrs (options != null && optionsSet ? ${namespace}) optionsSet.${namespace}
-    // {
-      enable = lib.mkEnableOption name;
-    };
+  options = lib.optionalAttrs (options
+    != null
+    && optionsSet ? ${namespace}) {
+    ${prefix}.${name} =
+      optionsSet.${namespace}
+      // {
+        enable = lib.mkEnableOption name;
+      };
+  };
 }