diff --git a/maven-plugin-plugin/src/site/apt/usage.apt b/maven-plugin-plugin/src/site/apt/usage.apt
index 793cba2..4a1672c 100644
--- a/maven-plugin-plugin/src/site/apt/usage.apt
+++ b/maven-plugin-plugin/src/site/apt/usage.apt
@@ -35,8 +35,8 @@ Usage
 
 * The <<<plugin:descriptor>>> Goal
 
-  The <<<plugin:descriptor>>> goal is bound to the <<<generate-resources>>> phase. This goal generates the plugin descriptor, which
-  is an xml file that contains information about the plugin.
+  The <<<plugin:descriptor>>> goal is bound to the <<<process-classes>>> phase since 3.0; it was bound to <<<generate-resources>>> phase previously.
+  This goal generates the plugin descriptor, which is an xml file that contains information about the plugin.
 
   For example, you want to create an archive of your plugin and you execute