diff --git a/pmd/etc/stringify_test_files.rb b/pmd/etc/stringify_test_files.rb
deleted file mode 100755
index 104bd8cb67..0000000000
--- a/pmd/etc/stringify_test_files.rb
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/usr/local/bin/ruby
-
-output = "private static final String TEST#{ARGV[1]} = \n"
-File.open(ARGV[0]).each {|line|
- output.concat "\"#{line.chomp}\" + CPD.EOL + \n"
-}
-output = output.slice(0, output.length-14)
-output.concat ";" 
-puts output
diff --git a/pmd/xdocs/credits.xml b/pmd/xdocs/credits.xml
index 7f5cde9a24..5b232788ed 100644
--- a/pmd/xdocs/credits.xml
+++ b/pmd/xdocs/credits.xml
@@ -10,6 +10,7 @@
     <section name="Credits">
         <subsection name="Individuals">
         <ul>
+            <li>Mario Claerhout - CPD optimizations and suggestions</li>
             <li>Sameer Nanda - CPD Ant task bug report</li>
             <li>Nanne Baars - grammar suggestions, rule suggestions</li>
             <li>Colin Simmonds - bug report</li>