1 files changed, 3 insertions, 2 deletions
diff --git a/activesupport/lib/active_support/ordered_options.rb b/activesupport/lib/active_support/ordered_options.rb
index bf81567d22..9e5a5d0246 100644
--- a/activesupport/lib/active_support/ordered_options.rb
+++ b/activesupport/lib/active_support/ordered_options.rb
@@ -30,8 +30,9 @@ module ActiveSupport #:nodoc:
     end
 
     def method_missing(name, *args)
-      if name.to_s =~ /(.*)=$/
-        self[$1] = args.first
+      name_string = name.to_s
+      if name_string.chomp!('=')
+        self[name_string] = args.first
       else
         self[name]
       end