diff --git a/test_libs/pyspec/eth2spec/utils/ssz/ssz_typing.py b/test_libs/pyspec/eth2spec/utils/ssz/ssz_typing.py
index 7b5798529..50b6a3386 100644
--- a/test_libs/pyspec/eth2spec/utils/ssz/ssz_typing.py
+++ b/test_libs/pyspec/eth2spec/utils/ssz/ssz_typing.py
@@ -501,7 +501,3 @@ Bytes8: BytesType = BytesN[8]
 Bytes32: BytesType = BytesN[32]
 Bytes48: BytesType = BytesN[48]
 Bytes96: BytesType = BytesN[96]
-
-
-class DomainType(Bytes4):
-    pass