diff --git a/tests/formats/ssz_generic/README.md b/tests/formats/ssz_generic/README.md
index 85a507985..dacd72779 100644
--- a/tests/formats/ssz_generic/README.md
+++ b/tests/formats/ssz_generic/README.md
@@ -180,7 +180,7 @@ class ComplexTestStruct(Container):
     A: uint16
     B: List[uint16, 128]
     C: uint8
-    D: Bytes[256]
+    D: List[uint8, 256]
     E: VarTestStruct
     F: Vector[FixedTestStruct, 4]
     G: Vector[VarTestStruct, 2]