diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index 22d89aa37218dbd2a36ba2a1359a8dca9b7c259f..19e10ab3d56983882e10b6df0a67a15d9b3707a5 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -547,7 +547,7 @@ Table 1-5: Kernel info in /proc
  sys         See chapter 2                                     
  sysvipc     Info of SysVIPC Resources (msg, sem, shm)		(2.4)
  tty	     Info of tty drivers
- uptime      System uptime                                     
+ uptime      Wall clock since boot, combined idle time of all cpus
  version     Kernel version                                    
  video	     bttv info of video resources			(2.4)
  vmallocinfo Show vmalloced areas