diff --git a/specs/merge/beacon-chain.md b/specs/merge/beacon-chain.md
index 35f1407be..3b467e78f 100644
--- a/specs/merge/beacon-chain.md
+++ b/specs/merge/beacon-chain.md
@@ -83,7 +83,7 @@ This patch adds transaction execution to the beacon chain as part of the Merge f
 | Name | Value |
 | - | - |
 | `TERMINAL_TOTAL_DIFFICULTY` | **TBD** |
-| `TERMINAL_BLOCK_HASH` | `Bytes32('0x0000000000000000000000000000000000000000000000000000000000000000')` |
+| `TERMINAL_BLOCK_HASH` | `Hash32('0x0000000000000000000000000000000000000000000000000000000000000000')` |
 
 ## Containers