diff --git a/specs/phase0/p2p-interface.md b/specs/phase0/p2p-interface.md
index c04d2ae4c..674f2e2b8 100644
--- a/specs/phase0/p2p-interface.md
+++ b/specs/phase0/p2p-interface.md
@@ -80,7 +80,7 @@ It consists of four main sections:
     - [How do we upgrade gossip channels (e.g. changes in encoding, compression)?](#how-do-we-upgrade-gossip-channels-eg-changes-in-encoding-compression)
     - [Why must all clients use the same gossip topic instead of one negotiated between each peer pair?](#why-must-all-clients-use-the-same-gossip-topic-instead-of-one-negotiated-between-each-peer-pair)
     - [Why are the topics strings and not hashes?](#why-are-the-topics-strings-and-not-hashes)
-  - [Why are we overriding the default libp2p pubsub `message-id`?](#why-are-we-overriding-the-default-libp2p-pubsub-message-id)
+    - [Why are we overriding the default libp2p pubsub `message-id`?](#why-are-we-overriding-the-default-libp2p-pubsub-message-id)
     - [Why is there `MAXIMUM_GOSSIP_CLOCK_DISPARITY` when validating slot ranges of messages in gossip subnets?](#why-is-there-maximum_gossip_clock_disparity-when-validating-slot-ranges-of-messages-in-gossip-subnets)
     - [Why are there `ATTESTATION_SUBNET_COUNT` attestation subnets?](#why-are-there-attestation_subnet_count-attestation-subnets)
     - [Why are attestations limited to be broadcast on gossip channels within `SLOTS_PER_EPOCH` slots?](#why-are-attestations-limited-to-be-broadcast-on-gossip-channels-within-slots_per_epoch-slots)
@@ -759,7 +759,7 @@ No security or privacy guarantees are lost as a result of choosing plaintext top
 
 Furthermore, the Eth2 topic names are shorter than their digest equivalents (assuming SHA-256 hash), so hashing topics would bloat messages unnecessarily.
 
-## Why are we overriding the default libp2p pubsub `message-id`?
+### Why are we overriding the default libp2p pubsub `message-id`?
 
 For our current purposes, there is no need to address messages based on source peer, and it seems likely we might even override the message `from` to obfuscate the peer. By overriding the default `message-id` to use content-addressing we can filter unnecessary duplicates before hitting the application layer.