diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml
index 9d98b2b411..bf17188ed2 100644
--- a/man/systemd.exec.xml
+++ b/man/systemd.exec.xml
@@ -221,12 +221,13 @@
Linux systems.
When used in conjunction with DynamicUser= the user/group name specified is
- dynamically allocated at the time the service is started, and released at the time the service is stopped —
- unless it is already allocated statically (see below). If DynamicUser= is not used the
- specified user and group must have been created statically in the user database no later than the moment the
- service is started, for example using the
- sysusers.d5 facility, which
- is applied at boot or package install time.
+ dynamically allocated at the time the service is started, and released at the time the service is
+ stopped — unless it is already allocated statically (see below). If DynamicUser=
+ is not used the specified user and group must have been created statically in the user database no
+ later than the moment the service is started, for example using the
+ sysusers.d5
+ facility, which is applied at boot or package install time. If the user does not exist by then
+ program invocation will fail.
If the User= setting is used the supplementary group list is initialized
from the specified user's default group list, as defined in the system's user and group