diff --git a/kernel/timer.c b/kernel/timer.c
index f2a1188..5377f40 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1023,7 +1023,7 @@
 	parent = me->group_leader->real_parent;
 	for (;;) {
 		pid = parent->tgid;
-#ifdef CONFIG_SMP
+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
 {
 		struct task_struct *old = parent;