diff --git a/Documentation/timers/timekeeping.txt b/Documentation/timers/timekeeping.txt
index f3a8cf28f802027da8ff03e663fd5ffb4990eb76..2d1732b0a868012165a11a21f2b3d4ffe4c1f750 100644
--- a/Documentation/timers/timekeeping.txt
+++ b/Documentation/timers/timekeeping.txt
@@ -27,7 +27,7 @@ a Linux system will eventually read the clock source to determine exactly
 what time it is.
 
 Typically the clock source is a monotonic, atomic counter which will provide
-n bits which count from 0 to 2^(n-1) and then wraps around to 0 and start over.
+n bits which count from 0 to (2^n)-1 and then wraps around to 0 and start over.
 It will ideally NEVER stop ticking as long as the system is running. It
 may stop during system suspend.