diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 2ecb20b551e19e7b526fc57021bd4d83fa1b09ea..9ddf896a137a6033509739e4453b6963c116516d 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -147,7 +147,7 @@
  * in UP:
  * 	- we need to protect against PMU overflow interrupts (local_irq_disable)
  *
- * spin_lock_irqsave()/spin_lock_irqrestore():
+ * spin_lock_irqsave()/spin_unlock_irqrestore():
  * 	in SMP: local_irq_disable + spin_lock
  * 	in UP : local_irq_disable
  *