maxRetCode in HttpDetector does not work

While trying to work around #3935, I configured

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<foreign-source date-stamp="2010-06-29T13:15:30.494+02:00" name="test" xmlns="http://xmlns.opennms.org/xsd/config/foreign-source">
<scan-interval>1d</scan-interval>
<detectors>
<detector class="org.opennms.netmgt.provision.detector.simple.HttpDetector" name="http8080">
<parameter value="8080" key="port"/>
<parameter value="index2.html" key="url"/>
<parameter value="200" key="maxRetCode"/>
</detector>
</detectors>
<policies/>
</foreign-source>

The server does not provide "/index2.html":

wget http://10.2.50.105:8080/index2.html
-2010-06-29 13:18:22- http://10.2.50.105:8080/index2.html
Connecting to 10.2.50.105:8080... connected.
HTTP request sent, awaiting response... 404 Not Found
2010-06-29 13:18:22 ERROR 404: Not Found.

However, the service is detected.