diff --git a/lib/English.rb b/lib/English.rb
index 4640f68613..a4f5bb6620 100644
--- a/lib/English.rb
+++ b/lib/English.rb
@@ -153,9 +153,7 @@ alias $CHILD_STATUS            $?
 # scope.
 alias $LAST_MATCH_INFO         $~
 
-# If set to any value apart from +nil+ or +false+, all pattern matches
-# will be case insensitive, string comparisons will ignore case, and
-# string hash values will be case insensitive. Deprecated
+# This variable is no longer effective. Deprecated.
 alias $IGNORECASE              $=
 
 # An array of strings containing the command-line