Index: C:/SVN_WA/maven-help-plugin-2.0.2/src/main/java/org/apache/maven/plugins/help/ActiveProfilesMojo.java
===================================================================
--- C:/SVN_WA/maven-help-plugin-2.0.2/src/main/java/org/apache/maven/plugins/help/ActiveProfilesMojo.java	(revision 682076)
+++ C:/SVN_WA/maven-help-plugin-2.0.2/src/main/java/org/apache/maven/plugins/help/ActiveProfilesMojo.java	(working copy)
@@ -29,6 +29,7 @@
 import java.io.FileWriter;
 import java.io.IOException;
 import java.io.Writer;
+import java.util.ArrayList;
 import java.util.Date;
 import java.util.Iterator;
 import java.util.List;
@@ -181,7 +182,10 @@
      */
     private List collectActiveProfiles( MavenProject project )
     {
-        List profiles = project.getActiveProfiles();
+        List profiles = new ArrayList();
+        // Get active profiles into our own list,
+        // since we'll be modifying it, further below
+        profiles.addAll(project.getActiveProfiles());
 
         if ( project.hasParent() )
         {