diff --git a/doc/management.txt b/doc/management.txt
index 99b3e59..e71849a 100644
--- a/doc/management.txt
+++ b/doc/management.txt
@@ -1788,7 +1788,9 @@
 set profiling { tasks } { auto | on | off }
   Enables or disables CPU profiling for the indicated subsystem. This is
   equivalent to setting or clearing the "profiling" settings in the "global"
-  section of the configuration file. Please also see "show profiling".
+  section of the configuration file. Please also see "show profiling". Note
+  that manually setting the tasks profiling to "on" automatically resets the
+  scheduler statistics, thus allows to check activity over a given interval.
 
 set rate-limit connections global <value>
   Change the process-wide connection rate limit, which is set by the global