diff --git a/programs/bpf_loader/src/syscalls/mod.rs b/programs/bpf_loader/src/syscalls/mod.rs
index 26bd551976d547..65cc88d753a149 100644
--- a/programs/bpf_loader/src/syscalls/mod.rs
+++ b/programs/bpf_loader/src/syscalls/mod.rs
@@ -26,8 +26,7 @@ use {
         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,
-        reenable_sbpf_v1_execution, reject_callx_r10, remaining_compute_units_syscall_enabled,
-        FeatureSet,
+        reenable_sbpf_v1_execution, remaining_compute_units_syscall_enabled, FeatureSet,
     },
     solana_log_collector::{ic_logger_msg, ic_msg},
     solana_poseidon as poseidon,
@@ -300,7 +299,7 @@ pub fn create_program_runtime_environment_v1<'a>(
         sanitize_user_provided_values: true,
         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()),
+        reject_callx_r10: 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,
diff --git a/svm/tests/mock_bank.rs b/svm/tests/mock_bank.rs
index 5797d514888201..8adbd2a55bf13e 100644
--- a/svm/tests/mock_bank.rs
+++ b/svm/tests/mock_bank.rs
@@ -299,7 +299,7 @@ fn create_custom_environment<'a>() -> BuiltinProgram<InvokeContext<'a>> {
         noop_instruction_rate: 256,
         sanitize_user_provided_values: true,
         external_internal_function_hash_collision: false,
-        reject_callx_r10: false,
+        reject_callx_r10: true,
         enable_sbpf_v1: true,
         enable_sbpf_v2: false,
         optimize_rodata: false,