diff -up ./vmstat.8.ori ./vmstat.8
--- ./vmstat.8.ori	2020-05-19 16:08:39.788516855 +0200
+++ ./vmstat.8	2020-05-19 16:09:33.138186296 +0200
@@ -93,7 +93,7 @@ Display help and exit.
 .B "Procs"
 .nf
 r: The number of runnable processes (running or waiting for run time).
-b: The number of processes in uninterruptible sleep.
+b: Number of processes blocked waiting for I/O to complete.
 .fi
 .PP
 .SS