diff --git a/core/src/validator.rs b/core/src/validator.rs
index e008bffff7602e..243c3abf1fc526 100644
--- a/core/src/validator.rs
+++ b/core/src/validator.rs
@@ -815,6 +815,12 @@ impl Validator {
         match &config.block_verification_method {
             BlockVerificationMethod::BlockstoreProcessor => {
                 info!("no scheduler pool is installed for block verification...");
+                if let Some(count) = config.unified_scheduler_handler_threads {
+                    warn!(
+                        "--unified-scheduler-handler-threads={count} is ignored because unified \
+                         scheduler is disabled"
+                    );
+                }
             }
             BlockVerificationMethod::UnifiedScheduler => {
                 let scheduler_pool = DefaultSchedulerPool::new_dyn(
diff --git a/ledger-tool/src/ledger_utils.rs b/ledger-tool/src/ledger_utils.rs
index e170fae640e09d..12e3d5cba9a7ca 100644
--- a/ledger-tool/src/ledger_utils.rs
+++ b/ledger-tool/src/ledger_utils.rs
@@ -291,13 +291,19 @@ pub fn load_and_process_ledger(
         "Using: block-verification-method: {}",
         block_verification_method,
     );
+    let unified_scheduler_handler_threads =
+        value_t!(arg_matches, "unified_scheduler_handler_threads", usize).ok();
     match block_verification_method {
         BlockVerificationMethod::BlockstoreProcessor => {
             info!("no scheduler pool is installed for block verification...");
+            if let Some(count) = unified_scheduler_handler_threads {
+                warn!(
+                    "--unified-scheduler-handler-threads={count} is ignored because unified \
+                     scheduler is disabled"
+                );
+            }
         }
         BlockVerificationMethod::UnifiedScheduler => {
-            let unified_scheduler_handler_threads =
-                value_t!(arg_matches, "unified_scheduler_handler_threads", usize).ok();
             let no_transaction_status_sender = None;
             let no_replay_vote_sender = None;
             let ignored_prioritization_fee_cache = Arc::new(PrioritizationFeeCache::new(0u64));