diff --git a/Formula/kettle.rb b/Formula/kettle.rb
index 681aacfe0b..e9687d29f9 100644
--- a/Formula/kettle.rb
+++ b/Formula/kettle.rb
@@ -22,7 +22,7 @@ class Kettle < Formula
     end
   end
 
-  plist_options :manual => "pdicarte /usr/local/etc/kettle/carte-config.xml"
+  plist_options :manual => "pdicarte #{HOMEBREW_PREFIX}/etc/kettle/carte-config.xml"
 
   def plist; <<-EOS.undent
     <?xml version="1.0" encoding="UTF-8"?>