diff --git a/lib/slug.rb b/lib/slug.rb
index bbf99a191db..725cf1633cd 100644
--- a/lib/slug.rb
+++ b/lib/slug.rb
@@ -33,8 +33,7 @@ module Slug
   end
 
   def self.ascii_generator(string)
-    string.tr!("'", "")
-    string.parameterize
+    string.tr("'", "").parameterize
   end
 
   def self.encoded_generator(string, downcase: true)