diff --git a/man/systemd.service.xml b/man/systemd.service.xml
index 86d71083ff..d7a8521c58 100644
--- a/man/systemd.service.xml
+++ b/man/systemd.service.xml
@@ -727,8 +727,8 @@
         <listitem><para>Configures a maximum time for the service to run. If this is used and the service has been
         active for longer than the specified time it is terminated and put into a failure state. Note that this setting
         does not have any effect on <varname>Type=oneshot</varname> services, as they terminate immediately after
-        activation completed. Pass <literal>infinity</literal> (the default) to configure no runtime
-        limit.</para>
+        activation completed (use <varname>TimeoutStartSec=</varname> to limit their activation).
+        Pass <literal>infinity</literal> (the default) to configure no runtime limit.</para>
 
         <para>If a service of <varname>Type=notify</varname>/<varname>Type=notify-reload</varname> sends
         <literal>EXTEND_TIMEOUT_USEC=…</literal>, this may cause the runtime to be extended beyond