diff --git a/setup.py b/setup.py
index 355f6e2c1..0ced87be2 100644
--- a/setup.py
+++ b/setup.py
@@ -511,7 +511,7 @@ ExecutionState = Any
 
 
 def get_pow_block(hash: Bytes32) -> Optional[PowBlock]:
-    return PowBlock(block_hash=hash, parent_hash=Bytes32(), total_difficulty=uint256(0), difficulty=uint256(0))
+    return PowBlock(block_hash=hash, parent_hash=Bytes32(), total_difficulty=uint256(0))
 
 
 def get_execution_state(execution_state_root: Bytes32) -> ExecutionState:
diff --git a/specs/merge/fork-choice.md b/specs/merge/fork-choice.md
index 4a42a260e..154766dbd 100644
--- a/specs/merge/fork-choice.md
+++ b/specs/merge/fork-choice.md
@@ -87,7 +87,6 @@ class PowBlock(Container):
     block_hash: Hash32
     parent_hash: Hash32
     total_difficulty: uint256
-    difficulty: uint256
 ```
 
 ### `get_pow_block`
diff --git a/tests/core/pyspec/eth2spec/test/helpers/pow_block.py b/tests/core/pyspec/eth2spec/test/helpers/pow_block.py
index 58989a420..939360e93 100644
--- a/tests/core/pyspec/eth2spec/test/helpers/pow_block.py
+++ b/tests/core/pyspec/eth2spec/test/helpers/pow_block.py
@@ -21,7 +21,6 @@ def prepare_random_pow_block(spec, rng=Random(3131)):
         block_hash=spec.Hash32(spec.hash(bytearray(rng.getrandbits(8) for _ in range(32)))),
         parent_hash=spec.Hash32(spec.hash(bytearray(rng.getrandbits(8) for _ in range(32)))),
         total_difficulty=uint256(0),
-        difficulty=uint256(0)
     )