diff --git a/specs/phase0/validator.md b/specs/phase0/validator.md
index c10b2442a..be151447d 100644
--- a/specs/phase0/validator.md
+++ b/specs/phase0/validator.md
@@ -411,7 +411,7 @@ def get_signed_attestation_data(state: BeaconState, attestation: IndexedAttestat
 
 #### Broadcast attestation
 
-Finally, the validator broadcasts `attestation` to the associated attestation subnet -- the `index{attestation.data.index % ATTESTATION_SUBNET_COUNT}_beacon_attestation` pubsub topic.
+Finally, the validator broadcasts `attestation` to the associated attestation subnet -- the `committee_index{attestation.data.index % ATTESTATION_SUBNET_COUNT}_beacon_attestation` pubsub topic.
 
 ### Attestation aggregation