diff --git a/specs/core/0_beacon-chain.md b/specs/core/0_beacon-chain.md
index 74695576d..6d184a79e 100644
--- a/specs/core/0_beacon-chain.md
+++ b/specs/core/0_beacon-chain.md
@@ -81,11 +81,11 @@
         - [RANDAO](#randao)
         - [PoW receipt root](#pow-receipt-root)
         - [Transactions](#transactions)
-            - [Proposer slashings](#proposer-slashing)
-            - [Casper slashings](#casper-slashing)
-            - [Attestations](#attestations)
-            - [Deposits](#deposits)
-            - [Exits](#exits)
+            - [Proposer slashings](#proposer-slashings-1)
+            - [Casper slashings](#casper-slashings-1)
+            - [Attestations](#attestations-1)
+            - [Deposits](#deposits-1)
+            - [Exits](#exits-1)
     - [Per-epoch processing](#per-epoch-processing)
         - [Helpers](#helpers)
         - [Receipt roots](#receipt-roots)