diff --git a/tests/regression/vecaddx/kernel.cpp b/tests/regression/vecaddx/kernel.cpp
index 6ed42164..6e782586 100644
--- a/tests/regression/vecaddx/kernel.cpp
+++ b/tests/regression/vecaddx/kernel.cpp
@@ -13,6 +13,10 @@ void kernel_body(int task_id, kernel_arg_t* __UNIFORM__ arg) {
 
 int main() {
 	kernel_arg_t* arg = (kernel_arg_t*)KERNEL_ARG_DEV_MEM_ADDR;
+#ifdef RADIANCE
+	vx_spawn_tasks_cluster(arg->num_points, (vx_spawn_tasks_cb)kernel_body, arg);
+#else
 	vx_spawn_tasks(arg->num_points, (vx_spawn_tasks_cb)kernel_body, arg);
+#endif
 	return 0;
 }