diff --git a/tests/core/pyspec/eth2spec/test/helpers/execution_payload.py b/tests/core/pyspec/eth2spec/test/helpers/execution_payload.py
index 1ef63eaaf..c41a05079 100644
--- a/tests/core/pyspec/eth2spec/test/helpers/execution_payload.py
+++ b/tests/core/pyspec/eth2spec/test/helpers/execution_payload.py
@@ -51,7 +51,7 @@ def build_state_with_incomplete_transition(spec, state):
 
 
 def build_state_with_complete_transition(spec, state):
-    pre_state_payload = build_empty_execution_payload(spec, state, spec.Bytes32())
+    pre_state_payload = build_empty_execution_payload(spec, state)
     payload_header = get_execution_payload_header(spec, pre_state_payload)
 
     return build_state_with_execution_payload_header(spec, state, payload_header)
diff --git a/tests/core/pyspec/eth2spec/test/merge/block_processing/test_process_execution_payload.py b/tests/core/pyspec/eth2spec/test/merge/block_processing/test_process_execution_payload.py
index 15c69f2dd..4c68034d4 100644
--- a/tests/core/pyspec/eth2spec/test/merge/block_processing/test_process_execution_payload.py
+++ b/tests/core/pyspec/eth2spec/test/merge/block_processing/test_process_execution_payload.py
@@ -32,8 +32,7 @@ def run_execution_payload_processing(spec, state, execution_payload, valid=True,
             return execution_valid
 
     if not valid:
-        expect_assertion_error(
-            lambda: spec.process_execution_payload(state, execution_payload, TestEngine()))
+        expect_assertion_error(lambda: spec.process_execution_payload(state, execution_payload, TestEngine()))
         yield 'post', None
         return