diff --git a/validator_client/validator_services/src/duties_service.rs b/validator_client/validator_services/src/duties_service.rs
index de695ec0eb..de4eeb2d62 100644
--- a/validator_client/validator_services/src/duties_service.rs
+++ b/validator_client/validator_services/src/duties_service.rs
@@ -137,31 +137,30 @@ async fn make_selection_proof<T: SlotClock + 'static, E: EthSpec>(
         // Call the endpoint /eth/v1/validator/beacon_committee_selections
         // During the call, we submit a partial selection proof in the data field of the POST HTTP endpoint
         // The end point (middleware) should return a full selection proof
-
         let selections = BeaconCommitteeSelection {
-            validator_index: duty.validator_idnex,
+            validator_index: duty.validator_index,
             slot: duty.slot,
             selection_proof: validator_store
                 .produce_selection_proof(duty.pubkey, duty.slot)
                 .await
-                .map_err(Error::FailedToProduceSelectionProof)?;
+                .map_err(Error::FailedToProduceSelectionProof)?
+                .into(),
         };
-
         beacon_nodes
             .first_success(|beacon_node| async move {
                 beacon_node
-                    .post_validator_beacon_committee_selections(selections)
+                    .post_validator_beacon_committee_selections(&[selections])
                     .await
             })
             .await
-            .map_err(|e| Error::FailedToProduceSelectionProof(e.to_string()))
+            .map_err(|e| Error::FailedToDownloadAttesters(e.to_string()))?
     } else {
         validator_store
             .produce_selection_proof(duty.pubkey, duty.slot)
             .await
             .map_err(Error::FailedToProduceSelectionProof)?;
     };
-    
+
     selection_proof
         .is_aggregator(duty.committee_length as usize, spec)
         .map_err(Error::InvalidModulo)