diff --git a/activesupport/lib/active_support/inflector.rb b/activesupport/lib/active_support/inflector.rb
index 336b6db47f490ee64219c7dc23045093d05129d6..74ca732073280519d236219a531c0bf018d74bf8 100644
--- a/activesupport/lib/active_support/inflector.rb
+++ b/activesupport/lib/active_support/inflector.rb
@@ -273,7 +273,7 @@ def parameterize(string, sep = '-')
 
     # Replaces accented characters with their ascii equivalents.
     def transliterate(string)
-      Iconv.iconv('ascii//translit//IGNORE', 'utf-8', string).to_s
+      Iconv.iconv('ascii//ignore//translit', 'utf-8', string).to_s
     end
 
     # The iconv transliteration code doesn't function correctly