diff --git a/specs/core/0_beacon-chain.md b/specs/core/0_beacon-chain.md
index 2881890c1..1daa1e789 100644
--- a/specs/core/0_beacon-chain.md
+++ b/specs/core/0_beacon-chain.md
@@ -1676,7 +1676,7 @@ def update_validator_registry(state: BeaconState) -> None:
     # Activate validators within the allowable balance churn
     balance_churn = 0
     for index, validator in enumerate(state.validator_registry):
-        if validator.activation_slot > state.slot and state.validator_balances[index] >= MAX_DEPOSIT * GWEI_PER_ETH:
+        if validator.activation_slot > state.slot + ENTRY_EXIT_DELAY and state.validator_balances[index] >= MAX_DEPOSIT * GWEI_PER_ETH:
             # Check the balance churn would be within the allowance
             balance_churn += get_effective_balance(state, index)
             if balance_churn > max_balance_churn: