diff --git a/core/src/transaction_priority_details.rs b/core/src/transaction_priority_details.rs
index e7d137de34..7f816cad2a 100644
--- a/core/src/transaction_priority_details.rs
+++ b/core/src/transaction_priority_details.rs
@@ -23,6 +23,7 @@ pub trait GetTransactionPriorityDetails {
         let prioritization_fee_details = compute_budget
             .process_instructions(
                 instructions,
+                true, // use default units per instruction
                 true, // don't reject txs that use set compute unit price ix
             )
             .ok()?;
diff --git a/program-runtime/src/compute_budget.rs b/program-runtime/src/compute_budget.rs
index b36c8325b4..31432f387f 100644
--- a/program-runtime/src/compute_budget.rs
+++ b/program-runtime/src/compute_budget.rs
@@ -126,6 +126,7 @@ impl ComputeBudget {
     pub fn process_instructions<'a>(
         &mut self,
         instructions: impl Iterator<Item = (&'a Pubkey, &'a CompiledInstruction)>,
+        default_units_per_instruction: bool,
         support_set_compute_unit_price_ix: bool,
     ) -> Result<PrioritizationFeeDetails, TransactionError> {
         let mut num_non_compute_budget_instructions: usize = 0;
@@ -220,15 +221,18 @@ impl ComputeBudget {
             self.heap_size = Some(bytes as usize);
         }
 
-        self.compute_unit_limit = updated_compute_unit_limit
-            .or_else(|| {
+        self.compute_unit_limit = if default_units_per_instruction {
+            updated_compute_unit_limit.or_else(|| {
                 Some(
                     (num_non_compute_budget_instructions as u32)
                         .saturating_mul(DEFAULT_INSTRUCTION_COMPUTE_UNIT_LIMIT),
                 )
             })
-            .unwrap_or(MAX_COMPUTE_UNIT_LIMIT)
-            .min(MAX_COMPUTE_UNIT_LIMIT) as u64;
+        } else {
+            updated_compute_unit_limit
+        }
+        .unwrap_or(MAX_COMPUTE_UNIT_LIMIT)
+        .min(MAX_COMPUTE_UNIT_LIMIT) as u64;
 
         Ok(prioritization_fee
             .map(|fee_type| PrioritizationFeeDetails::new(fee_type, self.compute_unit_limit))
@@ -271,8 +275,11 @@ mod tests {
                 Hash::default(),
             ));
             let mut compute_budget = ComputeBudget::default();
-            let result = compute_budget
-                .process_instructions(tx.message().program_instructions_iter(), $type_change);
+            let result = compute_budget.process_instructions(
+                tx.message().program_instructions_iter(),
+                true,
+                $type_change,
+            );
             assert_eq!($expected_result, result);
             assert_eq!(compute_budget, $expected_budget);
         };
diff --git a/runtime/src/bank.rs b/runtime/src/bank.rs
index dc5d116f08..c0453d8064 100644
--- a/runtime/src/bank.rs
+++ b/runtime/src/bank.rs
@@ -108,8 +108,8 @@ use {
         epoch_schedule::EpochSchedule,
         feature,
         feature_set::{
-            self, add_set_compute_unit_price_ix, disable_fee_calculator,
-            enable_early_verification_of_account_modifications, FeatureSet,
+            self, add_set_compute_unit_price_ix, default_units_per_instruction,
+            disable_fee_calculator, enable_early_verification_of_account_modifications, FeatureSet,
         },
         fee::FeeStructure,
         fee_calculator::{FeeCalculator, FeeRateGovernor},
@@ -4542,6 +4542,7 @@ impl Bank {
                             Measure::start("compute_budget_process_transaction_time");
                         let process_transaction_result = compute_budget.process_instructions(
                             tx.message().program_instructions_iter(),
+                            feature_set.is_active(&default_units_per_instruction::id()),
                             feature_set.is_active(&add_set_compute_unit_price_ix::id()),
                         );
                         compute_budget_process_transaction_time.stop();
@@ -4836,6 +4837,7 @@ impl Bank {
         let prioritization_fee_details = compute_budget
             .process_instructions(
                 message.program_instructions_iter(),
+                false,
                 support_set_compute_unit_price_ix,
             )
             .unwrap_or_default();