diff --git a/programs/bpf_loader/src/syscalls/mod.rs b/programs/bpf_loader/src/syscalls/mod.rs
index 2c5d8e9feed26d..26bd551976d547 100644
--- a/programs/bpf_loader/src/syscalls/mod.rs
+++ b/programs/bpf_loader/src/syscalls/mod.rs
@@ -21,12 +21,13 @@ use {
     solana_feature_set::{
         self as feature_set, abort_on_invalid_curve, blake3_syscall_enabled,
         bpf_account_data_direct_mapping, curve25519_syscall_enabled,
-        disable_deploy_of_alloc_free_syscall, disable_fees_sysvar,
+        disable_deploy_of_alloc_free_syscall, disable_fees_sysvar, disable_sbpf_v1_execution,
         enable_alt_bn128_compression_syscall, enable_alt_bn128_syscall, enable_big_mod_exp_syscall,
         enable_get_epoch_stake_syscall, enable_partitioned_epoch_reward, enable_poseidon_syscall,
         error_on_syscall_bpf_function_hash_collisions, get_sysvar_syscall_enabled,
-        last_restart_slot_sysvar, partitioned_epoch_rewards_superfeature, reject_callx_r10,
-        remaining_compute_units_syscall_enabled, FeatureSet,
+        last_restart_slot_sysvar, partitioned_epoch_rewards_superfeature,
+        reenable_sbpf_v1_execution, reject_callx_r10, remaining_compute_units_syscall_enabled,
+        FeatureSet,
     },
     solana_log_collector::{ic_logger_msg, ic_msg},
     solana_poseidon as poseidon,
@@ -300,7 +301,8 @@ pub fn create_program_runtime_environment_v1<'a>(
         external_internal_function_hash_collision: feature_set
             .is_active(&error_on_syscall_bpf_function_hash_collisions::id()),
         reject_callx_r10: feature_set.is_active(&reject_callx_r10::id()),
-        enable_sbpf_v1: true,
+        enable_sbpf_v1: !feature_set.is_active(&disable_sbpf_v1_execution::id())
+            || feature_set.is_active(&reenable_sbpf_v1_execution::id()),
         enable_sbpf_v2: false,
         optimize_rodata: false,
         aligned_memory_mapping: !feature_set.is_active(&bpf_account_data_direct_mapping::id()),
diff --git a/programs/bpf_loader/test_elfs/out/callx-r10-sbfv1.so b/programs/bpf_loader/test_elfs/out/callx-r10-sbfv1.so
deleted file mode 100644
index cfa64553838012..00000000000000
Binary files a/programs/bpf_loader/test_elfs/out/callx-r10-sbfv1.so and /dev/null differ
diff --git a/runtime/src/bank/tests.rs b/runtime/src/bank/tests.rs
index 4df464cdfea6ff..915dfb65bf5e00 100644
--- a/runtime/src/bank/tests.rs
+++ b/runtime/src/bank/tests.rs
@@ -11917,13 +11917,15 @@ fn test_feature_activation_loaded_programs_cache_preparation_phase() {
     let (mut genesis_config, mint_keypair) = create_genesis_config(1_000_000 * LAMPORTS_PER_SOL);
     genesis_config
         .accounts
-        .remove(&feature_set::reject_callx_r10::id());
+        .remove(&feature_set::disable_sbpf_v1_execution::id());
+    genesis_config
+        .accounts
+        .remove(&feature_set::reenable_sbpf_v1_execution::id());
     let (root_bank, bank_forks) = Bank::new_with_bank_forks_for_tests(&genesis_config);
 
     // Program Setup
     let program_keypair = Keypair::new();
-    let program_data =
-        include_bytes!("../../../programs/bpf_loader/test_elfs/out/callx-r10-sbfv1.so");
+    let program_data = include_bytes!("../../../programs/bpf_loader/test_elfs/out/noop_aligned.so");
     let program_account = AccountSharedData::from(Account {
         lamports: Rent::default().minimum_balance(program_data.len()).min(1),
         data: program_data.to_vec(),
@@ -11946,19 +11948,13 @@ fn test_feature_activation_loaded_programs_cache_preparation_phase() {
     // Load the program with the old environment.
     let transaction = Transaction::new(&signers, message.clone(), bank.last_blockhash());
     let result_without_feature_enabled = bank.process_transaction(&transaction);
-    assert_eq!(
-        result_without_feature_enabled,
-        Err(TransactionError::InstructionError(
-            0,
-            InstructionError::ProgramFailedToComplete
-        ))
-    );
+    assert_eq!(result_without_feature_enabled, Ok(()));
 
     // Schedule feature activation to trigger a change of environment at the epoch boundary.
     let feature_account_balance =
         std::cmp::max(genesis_config.rent.minimum_balance(Feature::size_of()), 1);
     bank.store_account(
-        &feature_set::reject_callx_r10::id(),
+        &feature_set::disable_sbpf_v1_execution::id(),
         &feature::create_account(&Feature { activated_at: None }, feature_account_balance),
     );
 
@@ -12030,7 +12026,10 @@ fn test_feature_activation_loaded_programs_epoch_transition() {
     let (mut genesis_config, mint_keypair) = create_genesis_config(1_000_000 * LAMPORTS_PER_SOL);
     genesis_config
         .accounts
-        .remove(&feature_set::reject_callx_r10::id());
+        .remove(&feature_set::disable_fees_sysvar::id());
+    genesis_config
+        .accounts
+        .remove(&feature_set::reenable_sbpf_v1_execution::id());
     let (root_bank, bank_forks) = Bank::new_with_bank_forks_for_tests(&genesis_config);
 
     // Program Setup
@@ -12063,7 +12062,7 @@ fn test_feature_activation_loaded_programs_epoch_transition() {
     let feature_account_balance =
         std::cmp::max(genesis_config.rent.minimum_balance(Feature::size_of()), 1);
     bank.store_account(
-        &feature_set::reject_callx_r10::id(),
+        &feature_set::disable_fees_sysvar::id(),
         &feature::create_account(&Feature { activated_at: None }, feature_account_balance),
     );
 
@@ -12999,9 +12998,9 @@ fn test_deploy_last_epoch_slot() {
     let (mut genesis_config, mint_keypair) = create_genesis_config(1_000_000 * LAMPORTS_PER_SOL);
     genesis_config
         .accounts
-        .remove(&feature_set::reject_callx_r10::id());
+        .remove(&feature_set::disable_fees_sysvar::id());
     let mut bank = Bank::new_for_tests(&genesis_config);
-    bank.activate_feature(&feature_set::reject_callx_r10::id());
+    bank.activate_feature(&feature_set::disable_fees_sysvar::id());
 
     // go to the last slot in the epoch
     let (bank, bank_forks) = bank.wrap_with_bank_forks_for_tests();