diff --git a/apis/validator/beacon_committee_selections.yaml b/apis/validator/beacon_committee_selections.yaml
index 8c176eb4..c906012e 100644
--- a/apis/validator/beacon_committee_selections.yaml
+++ b/apis/validator/beacon_committee_selections.yaml
@@ -1,10 +1,10 @@
 post:
   operationId: "submitBeaconCommitteeSelections"
-  summary: Determine if a distributed validator has been selected to aggregate
+  summary: Determine if a distributed validator has been selected to aggregate attestations
   description: |
     This endpoint should be used by a validator client running as part of a distributed validator cluster, and is 
     implemented by a distributed validator middleware client. This endpoint is used to exchange partial 
-    selection proof slot signatures for combined/aggregated selection proofs to allow a validator client 
+    selection proofs for combined/aggregated selection proofs to allow a validator client 
     to correctly determine if one of its validators has been selected to perform an aggregation duty in this slot. 
     Consensus clients need not support this endpoint and may return a 501.
   tags:
diff --git a/apis/validator/sync_committee_selections.yaml b/apis/validator/sync_committee_selections.yaml
index b403100d..0b26fb0b 100644
--- a/apis/validator/sync_committee_selections.yaml
+++ b/apis/validator/sync_committee_selections.yaml
@@ -1,6 +1,6 @@
 post:
   operationId: "submitSyncCommitteeSelections"
-  summary: Detemine if a distributed validator has been selected to make a sync committee contribution
+  summary: Determine if a distributed validator has been selected to make a sync committee contribution
   description: |
     Submit sync committee selections to a DVT middleware client. It returns the threshold aggregated sync 
     committee selection. This endpoint should be used by a validator client running as part of a distributed 
diff --git a/types/http.yaml b/types/http.yaml
index 7f037239..16221692 100644
--- a/types/http.yaml
+++ b/types/http.yaml
@@ -60,7 +60,7 @@ NotImplementedError:
               type: string
       example:
         code: 501
-        message: "Endpoint not implemented."
+        message: "Endpoint not implemented"
 CurrentlySyncing:
   description: "Beacon node is currently syncing, try again later."
   content: