diff --git a/specs/core/0_beacon-chain.md b/specs/core/0_beacon-chain.md
index ae99a807a..a40bef6d1 100644
--- a/specs/core/0_beacon-chain.md
+++ b/specs/core/0_beacon-chain.md
@@ -25,8 +25,8 @@
     - [Containers](#containers)
         - [Misc dependencies](#misc-dependencies)
             - [`Fork`](#fork)
-            - [`Validator`](#validator)
             - [`Checkpoint`](#checkpoint)
+            - [`Validator`](#validator)
             - [`Crosslink`](#crosslink)
             - [`AttestationData`](#attestationdata)
             - [`AttestationDataAndCustodyBit`](#attestationdataandcustodybit)