diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index e39ab0c..09640a8 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -780,6 +780,9 @@
 	lapic		[IA-32,APIC] Enable the local APIC even if BIOS
 			disabled it.
 
+	lapic_timer_c2_ok	[IA-32,APIC] trust the local apic timer in
+			C2 power state.
+
 	lasi=		[HW,SCSI] PARISC LASI driver for the 53c700 chip
 			Format: addr:<io>,irq:<irq>