diff --git a/specs/core/0_beacon-chain.md b/specs/core/0_beacon-chain.md
index a75218329..fac0cb640 100644
--- a/specs/core/0_beacon-chain.md
+++ b/specs/core/0_beacon-chain.md
@@ -127,10 +127,10 @@
                 - [Voluntary exits](#voluntary-exits-1)
                 - [Transfers](#transfers-1)
         - [Per-epoch processing](#per-epoch-processing)
-            - [Helper variables](#helper-variables)
-            - [Eth1 data](#eth1-data-1)
+            - [Helper functions](#helper-functions-1)
             - [Justification](#justification)
             - [Crosslinks](#crosslinks)
+            - [Eth1 data](#eth1-data-1)
             - [Rewards and penalties](#rewards-and-penalties)
                 - [Justification and finalization](#justification-and-finalization)
                 - [Attestation inclusion](#attestation-inclusion)