--- a/bus/system.conf.in
+++ b/bus/system.conf.in
@@ -50,6 +50,9 @@
          even if they aren't in here -->
     <allow send_destination="org.freedesktop.DBus"/>
     <allow receive_sender="org.freedesktop.DBus"/>
+    <!-- Introspection and Peer methods are always allowed -->
+    <allow send_interface="org.freedesktop.DBus.Introspectable"/>
+    <allow send_interface="org.freedesktop.DBus.Peer"/>
     <!-- allow sending valid replies -->
     <allow send_requested_reply="true" send_type="method_return"/>
     <allow send_requested_reply="true" send_type="error"/>
--- a/test/name-test/tmp-session-like-system.conf
+++ b/test/name-test/tmp-session-like-system.conf
@@ -25,10 +25,13 @@
     <!-- But allow all users to connect -->
     <allow user="*"/>
     <!-- Allow anyone to talk to the message bus -->
-    <!-- FIXME I think currently these eallow rules are always implicit 
+    <!-- FIXME I think currently these allow rules are always implicit 
          even if they aren't in here -->
     <allow send_destination="org.freedesktop.DBus"/>
     <allow receive_sender="org.freedesktop.DBus"/>
+    <!-- Introspection and Peer methods are always allowed -->
+    <allow send_interface="org.freedesktop.DBus.Introspectable"/>
+    <allow send_interface="org.freedesktop.DBus.Peer"/>
     <!-- valid replies are always allowed -->
     <allow send_requested_reply="true" send_type="method_return"/>
     <allow send_requested_reply="true" send_type="error"/>
-- 
1.6.0.4