diff --git a/actionpack/lib/action_dispatch/middleware/static.rb b/actionpack/lib/action_dispatch/middleware/static.rb
index cb251bca6f..63b7422287 100644
--- a/actionpack/lib/action_dispatch/middleware/static.rb
+++ b/actionpack/lib/action_dispatch/middleware/static.rb
@@ -39,7 +39,7 @@ module ActionDispatch
     end
 
     def escape_glob_chars(path)
-      path.gsub(/(\*|\?|\[|\]|\{|\})/, "\\\\\\1")
+      path.gsub(/[*?{}\[\]]/, "\\\\\\&")
     end
   end