diff --git a/lib/helpers.nix b/lib/helpers.nix
index 393ba2ab..a71a3acf 100644
--- a/lib/helpers.nix
+++ b/lib/helpers.nix
@@ -88,6 +88,8 @@ rec {
     mkInt = default: mkNullable lib.types.int (toString default);
     mkBool = default: mkNullable lib.types.bool (if default then "true" else "false");
     mkStr = default: mkNullable lib.types.str ''"${default}"'';
+    mkEnum = enum: default: mkNullable (lib.types.enum enum) ''"${default}"'';
+    mkEnumFirstDefault = enum: mkEnum enum (head enum);
   };
 
   mkPlugin = { config, lib, ... }: { name