diff --git a/bus/system.conf.in b/bus/system.conf.in
index 2ca4ae58..7c79a1ae 100644
--- a/bus/system.conf.in
+++ b/bus/system.conf.in
@@ -69,6 +69,8 @@
            send_interface="org.freedesktop.DBus.Introspectable"/>
     <allow send_destination="org.freedesktop.DBus"
            send_interface="org.freedesktop.DBus.Properties"/>
+    <allow send_destination="org.freedesktop.DBus"
+           send_interface="org.freedesktop.DBus.Containers1"/>
     <!-- But disallow some specific bus services -->
     <deny send_destination="org.freedesktop.DBus"
           send_interface="org.freedesktop.DBus"