diff --git a/kernel/timer.c b/kernel/timer.c
index 6dfdb72..dd93d90 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1680,12 +1680,12 @@
 			boot_done = 1;
 			base = &boot_tvec_bases;
 		}
+		spin_lock_init(&base->lock);
 		tvec_base_done[cpu] = 1;
 	} else {
 		base = per_cpu(tvec_bases, cpu);
 	}
 
-	spin_lock_init(&base->lock);
 
 	for (j = 0; j < TVN_SIZE; j++) {
 		INIT_LIST_HEAD(base->tv5.vec + j);