diff --git a/drivers/acpi/acpica/hwtimer.c b/drivers/acpi/acpica/hwtimer.c
index 19f6cce..bfdce22 100644
--- a/drivers/acpi/acpica/hwtimer.c
+++ b/drivers/acpi/acpica/hwtimer.c
@@ -127,7 +127,7 @@
  *              a versatile and accurate timer.
  *
  *              Note that this function accommodates only a single timer
- *              rollover.  Thus for 24-bit timers, this function should only
+ *              rollover. Thus for 24-bit timers, this function should only
  *              be used for calculating durations less than ~4.6 seconds
  *              (~20 minutes for 32-bit timers) -- calculations below:
  *