diff --git a/contrib/test/test-vectors-fixtures/test-vectors-commit-sha.txt b/contrib/test/test-vectors-fixtures/test-vectors-commit-sha.txt
index 1bbde3add5..b14209d16a 100644
--- a/contrib/test/test-vectors-fixtures/test-vectors-commit-sha.txt
+++ b/contrib/test/test-vectors-fixtures/test-vectors-commit-sha.txt
@@ -1 +1 @@
-28998db63d8a506c7180c8d4e1dacfbdc6cf6e33
+f46721d202e91423ad2c2aa2029c9e1f71c08375
diff --git a/contrib/test/test-vectors-fixtures/txn-fixtures/program-tests.list b/contrib/test/test-vectors-fixtures/txn-fixtures/program-tests.list
index 8744a72170..acb2ddcab7 100644
--- a/contrib/test/test-vectors-fixtures/txn-fixtures/program-tests.list
+++ b/contrib/test/test-vectors-fixtures/txn-fixtures/program-tests.list
@@ -1,9 +1,11 @@
 dump/test-vectors/txn/fixtures/programs/1aef56362df9ae008fbd3d21fe0f5ca5c2bb93e8_1509242.fix
 dump/test-vectors/txn/fixtures/programs/2418705d8008ed1bd58108b4e9ce43ae111a1cdc_1870939.fix
+dump/test-vectors/txn/fixtures/programs/28c9bd56453eff58ad736c7ea4b8f61325a2fa5d_2050912.fix
 dump/test-vectors/txn/fixtures/programs/2e6cbb44ce7014cd45620872b31af391476032a2_1684472.fix
 dump/test-vectors/txn/fixtures/programs/308129c271ce81ab4b217bf262dd43e855b5b119_3709853.fix
 dump/test-vectors/txn/fixtures/programs/31837b434273533d354985aa1dfdde5edf8fabe1_85273.fix
 dump/test-vectors/txn/fixtures/programs/430c9cbdf850779d725e4b38340ce83f1bf59434_1313564.fix
+dump/test-vectors/txn/fixtures/programs/475f33d2f9070eebe4934e34e92580b2ce0e7da1_3047163.fix
 dump/test-vectors/txn/fixtures/programs/81e2a423431d64b80c68120e7e1e04d5829b7bbc_2924287.fix
 dump/test-vectors/txn/fixtures/programs/871a9b0045d9a6f96f54fd5c78dad8a13b766889_437374.fix
 dump/test-vectors/txn/fixtures/programs/923cbadb9bcfc4bfc32f3985b4faeade40521a38_2611281.fix
diff --git a/src/flamenco/runtime/program/fd_compute_budget_program.c b/src/flamenco/runtime/program/fd_compute_budget_program.c
index 56af53c65f..4f88283c7d 100644
--- a/src/flamenco/runtime/program/fd_compute_budget_program.c
+++ b/src/flamenco/runtime/program/fd_compute_budget_program.c
@@ -29,17 +29,18 @@ sanitize_requested_heap_size( ulong bytes ) {
 /* https://github.com/anza-xyz/agave/blob/16de8b75ebcd57022409b422de557dd37b1de8db/compute-budget/src/compute_budget_processor.rs#L69-L148 */
 int 
 fd_executor_compute_budget_program_execute_instructions( fd_exec_txn_ctx_t * ctx, fd_rawtxn_b_t const * txn_raw ) {
-  uint has_compute_units_limit_update             = 0UL;
-  uint has_compute_units_price_update             = 0UL;
-  uint has_requested_heap_size                    = 0UL;
-  uint has_loaded_accounts_data_size_limit_update = 0UL;
+  uint   has_compute_units_limit_update              = 0UL;
+  uint   has_compute_units_price_update              = 0UL;
+  uint   has_requested_heap_size                     = 0UL;
+  uint   has_loaded_accounts_data_size_limit_update  = 0UL;
 
-  uint num_non_compute_budget_instrs = 0U;
+  ushort requested_heap_size_instr_index             = 0;
+  uint   num_non_compute_budget_instrs               = 0U;
 
-  uint  updated_compute_unit_limit              = 0U;
-  uint  updated_requested_heap_size             = 0U;
-  uint  updated_loaded_accounts_data_size_limit = 0U;
-  ulong updated_compute_unit_price              = 0UL;
+  uint   updated_compute_unit_limit                  = 0U;
+  uint   updated_requested_heap_size                 = 0U;
+  uint   updated_loaded_accounts_data_size_limit     = 0U;
+  ulong  updated_compute_unit_price                  = 0UL;
 
   uint prioritization_fee_type = FD_COMPUTE_BUDGET_PRIORITIZATION_FEE_TYPE_COMPUTE_UNIT_PRICE;
 
@@ -76,11 +77,8 @@ fd_executor_compute_budget_program_execute_instructions( fd_exec_txn_ctx_t * ctx
 
         has_requested_heap_size     = 1U;
         updated_requested_heap_size = instruction.inner.request_heap_frame;
+        requested_heap_size_instr_index = i;
 
-        if( FD_UNLIKELY( !sanitize_requested_heap_size( updated_requested_heap_size ) ) ) {
-          FD_TXN_ERR_FOR_LOG_INSTR( ctx, FD_EXECUTOR_INSTR_ERR_INVALID_INSTR_DATA, i );
-          return FD_RUNTIME_TXN_ERR_INSTRUCTION_ERROR;
-        } 
         break;
       }
       case fd_compute_budget_program_instruction_enum_set_compute_unit_limit: {
@@ -88,8 +86,8 @@ fd_executor_compute_budget_program_execute_instructions( fd_exec_txn_ctx_t * ctx
           return FD_RUNTIME_TXN_ERR_DUPLICATE_INSTRUCTION;
         }
 
-        has_compute_units_limit_update = 1U;
-        updated_compute_unit_limit     = instruction.inner.set_compute_unit_limit;
+        has_compute_units_limit_update  = 1U;
+        updated_compute_unit_limit      = instruction.inner.set_compute_unit_limit;
 
         break;
       }
@@ -121,7 +119,12 @@ fd_executor_compute_budget_program_execute_instructions( fd_exec_txn_ctx_t * ctx
     }
   }
 
+  /* https://github.com/anza-xyz/agave/blob/5535e79b8749f00d44e7d1524abcb56dad98ca75/runtime-transaction/src/compute_budget_instruction_details.rs#L51-L64 */
   if( has_requested_heap_size ) {
+    if( FD_UNLIKELY( !sanitize_requested_heap_size( updated_requested_heap_size ) ) ) {
+      FD_TXN_ERR_FOR_LOG_INSTR( ctx, FD_EXECUTOR_INSTR_ERR_INVALID_INSTR_DATA, requested_heap_size_instr_index );
+      return FD_RUNTIME_TXN_ERR_INSTRUCTION_ERROR;
+    } 
     ctx->heap_size = updated_requested_heap_size;
   }