diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml
index c46c0f6dd8..4a68695348 100644
--- a/man/systemd.exec.xml
+++ b/man/systemd.exec.xml
@@ -1046,7 +1046,10 @@
         boot-time, with the <citerefentry><refentrytitle>sysctl.d</refentrytitle><manvolnum>5</manvolnum></citerefentry>
         mechanism. Almost no services need to write to these at runtime; it is hence recommended to turn this on for
         most services. For this setting the same restrictions regarding mount propagation and privileges apply as for
-        <varname>ReadOnlyPaths=</varname> and related calls, see above. Defaults to off.</para></listitem>
+        <varname>ReadOnlyPaths=</varname> and related calls, see above. Defaults to off.
+        Note that this option does not prevent kernel tuning through IPC interfaces and exeternal programs. However
+        <varname>InaccessiblePaths=</varname> can be used to make some IPC file system objects
+        inaccessible.</para></listitem>
       </varlistentry>
 
       <varlistentry>