diff --git a/src/__tests__/transformers.test.ts b/src/__tests__/transformers.test.ts
index 7bb4972..bbae27c 100644
--- a/src/__tests__/transformers.test.ts
+++ b/src/__tests__/transformers.test.ts
@@ -463,6 +463,7 @@ describe('encrypt_properties', () => {
     }
 
     transform(payload, [transformer])
-    expect(payload.properties['citizenship']).not.toEqual('Indian')
+    expect(simpleEvent.properties.citizenship).not.toEqual('Indian')
+
   })
 })