diff --git a/lib/index.d.ts b/lib/index.d.ts
index 17ae72c5e..24d199bc5 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -629,7 +629,7 @@ declare namespace Joi {
          */
         annotate(stripColors?: boolean): string;
 
-        _object: any;
+        _original: any;
     }
 
     interface ValidationErrorItem {