diff --git a/man/systemd-system.conf.xml b/man/systemd-system.conf.xml
index 736218e519..0dea50f2fe 100644
--- a/man/systemd-system.conf.xml
+++ b/man/systemd-system.conf.xml
@@ -361,8 +361,10 @@
Configure the default value for the per-unit TasksMax= setting. See
systemd.resource-control5
for details. This setting applies to all unit types that support resource control settings, with the exception
- of slice units. Defaults to 15%, which equals 4915 with the kernel's defaults on the host, but might be smaller
- in OS containers.
+ of slice units. Defaults to 15% of the sysctl setting kernel.pid_max= or root cgroup pids.max.
+ Kernel has a default value for kernel.pid_max= and an algorithm of counting in case of more than 32 cores.
+ For example with the default kernel.pid_max=, DefaultTasksMax= defaults to 4915,
+ but might be greater in other systems or smaller in OS containers.