diff --git a/specs/beacon-chain.md b/specs/beacon-chain.md
index 16be55464..f98d8dd56 100644
--- a/specs/beacon-chain.md
+++ b/specs/beacon-chain.md
@@ -157,8 +157,6 @@ The `ActiveState` has the following fields:
 
 ```python
 {
-    # Most recent 2 * CYCLE_LENGTH block hashes, oldest to newest
-    'recent_block_hashes': ['hash32'],
     # Attestations not yet processed
     'pending_attestations': [AttestationRecord],
     # Specials not yet been processed