diff --git a/tests/rlp/test_object_serialization.nim b/tests/rlp/test_object_serialization.nim
index b1773998..e7c2c3b2 100644
--- a/tests/rlp/test_object_serialization.nim
+++ b/tests/rlp/test_object_serialization.nim
@@ -84,5 +84,6 @@ proc suite() =
         Bar.rlpFieldsCount == 2
         Foo.rlpFieldsCount == 3
         Transaction.rlpFieldsCount == 3
+        Withdrawal.rlpFieldsCount == 4
 
 suite()