diff --git a/man/systemd-tmpfiles.xml b/man/systemd-tmpfiles.xml
index 7720ef53fa..998fd0911b 100644
--- a/man/systemd-tmpfiles.xml
+++ b/man/systemd-tmpfiles.xml
@@ -161,10 +161,10 @@
Takes a directory path as an argument. All paths will be prefixed with the given alternate
root path, including config search paths.
- Note that this option does not alter how the users and groups specified in the configuration files are
- resolved. With or without this option, users and groups are always resolved according to the host's user and
- group databases, any such databases stored under the specified root directories are not
- consulted.
+ When this option is used, the libc Name Service Switch (NSS) is bypassed for resolving users
+ and groups. Instead the files /etc/passwd and /etc/group
+ inside the alternate root are read directly. This means that users/groups not listed in these files
+ will not be resolved, i.e. LDAP NIS and other complex databases are not considered.