diff --git a/cruisecontrol/xdocs/goals.xml b/cruisecontrol/xdocs/goals.xml
index b84f77c3..7fd461e0 100644
--- a/cruisecontrol/xdocs/goals.xml
+++ b/cruisecontrol/xdocs/goals.xml
@@ -8,7 +8,11 @@
     <goals>
       <goal>
         <name>cruisecontrol:configure</name>
-        <description>Update a Cruise Control configuration file with this project</description>
+        <description>
+          Update a Cruise Control configuration file with this project.
+          The variable maven.cruisecontrol.home must be set, and your project must
+          also specify a nag email address element.
+        </description>
       </goal>
       <goal>
         <name>cruisecontrol:run</name>