diff --git a/pam_usb/doc/pamusb.conf b/pam_usb/doc/pamusb.conf
index 1a3f900..77f35c5 100644
--- a/pam_usb/doc/pamusb.conf
+++ b/pam_usb/doc/pamusb.conf
@@ -42,8 +42,17 @@ See http://www.pamusb.org/doc/configuring
 	<!-- Services settings (e.g. gdm, su, sudo...) -->
 	<services>
 		<!-- Example: Speed up hotplugging by disabling one time pads -->
+		<!--
 		<service id="pamusb-agent">
 			<option name="one_time_pad">false</option>
 		</service>
+		-->
+
+		<!-- Disable output for 'su' (needed for gksu) -->
+		<!--
+		<service id="su">
+			<option name="quiet">true</option>
+		</service>
+		-->
 	</services>
 </configuration>