diff --git a/lib/rexml/formatters/default.rb b/lib/rexml/formatters/default.rb
index b84759d2ff..c375f1468b 100644
--- a/lib/rexml/formatters/default.rb
+++ b/lib/rexml/formatters/default.rb
@@ -2,7 +2,7 @@
 module REXML
   module Formatters
     class Default
-      # Prints out the XML document with no formatting -- except if id_hack is
+      # Prints out the XML document with no formatting -- except if ie_hack is
       # set.
       #
       # ie_hack::