diff --git a/validator_client/src/block_service.rs b/validator_client/src/block_service.rs
index 083ab3560e3..bf7a062495d 100644
--- a/validator_client/src/block_service.rs
+++ b/validator_client/src/block_service.rs
@@ -730,7 +730,7 @@ impl<T: SlotClock + 'static, E: EthSpec> BlockService<T, E> {
         // Try the proposer nodes last, since it's likely that they don't have a
         // great view of attestations on the network.
         let block_contents = proposer_fallback
-            .request_proposers_last(
+            .first_success_try_proposers_last(
                 RequireSynced::No,
                 OfflineOnFailure::Yes,
                 move |beacon_node| {
diff --git a/validator_client/src/cli.rs b/validator_client/src/cli.rs
index d3325e2b05b..301b26ba088 100644
--- a/validator_client/src/cli.rs
+++ b/validator_client/src/cli.rs
@@ -141,7 +141,8 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
                 .long("produce-block-v3")
                 .help("Enable block production via the block v3 endpoint for this validator client. \
                        This should only be enabled when paired with a beacon node \
-                       that has this endpoint implemented.")
+                       that has this endpoint implemented. This flag will be ignored \
+                       after the Deneb fork.")
                 .takes_value(false)
         )
         /* REST API related arguments */