diff --git a/src/story.ts b/src/story.ts
index 3d005a2..11e362e 100644
--- a/src/story.ts
+++ b/src/story.ts
@@ -67,7 +67,7 @@ type Control =
   | false
   | (ControlBase &
       (
-        | unknown
+        | ControlBase
         | {
             type: 'color';
             /**