2 files changed, 1 insertions, 14 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/json.rb b/activesupport/lib/active_support/core_ext/object/json.rb
index 7c11d44f57..bae9190687 100644
--- a/activesupport/lib/active_support/core_ext/object/json.rb
+++ b/activesupport/lib/active_support/core_ext/object/json.rb
@@ -132,15 +132,8 @@ class BigDecimal
   # if the other end knows by contract that the data is supposed to be a
   # BigDecimal, it still has the chance to post-process the string and get the
   # real value.
-  #
-  # Use <tt>ActiveSupport.encode_big_decimal_as_string = true</tt> to
-  # override this behavior.
   def as_json(options = nil) #:nodoc:
-    if finite?
-      ActiveSupport.encode_big_decimal_as_string ? to_s : self
-    else
-      nil
-    end
+    finite? ? to_s : nil
   end
 end
 
diff --git a/activesupport/lib/active_support/json/encoding.rb b/activesupport/lib/active_support/json/encoding.rb
index 0e1c379b5b..5fad5887c6 100644
--- a/activesupport/lib/active_support/json/encoding.rb
+++ b/activesupport/lib/active_support/json/encoding.rb
@@ -7,7 +7,6 @@ module ActiveSupport
   class << self
     delegate :use_standard_json_time_format, :use_standard_json_time_format=,
       :escape_html_entities_in_json, :escape_html_entities_in_json=,
-      :encode_big_decimal_as_string, :encode_big_decimal_as_string=,
       :to => :'ActiveSupport::JSON::Encoding'
   end
 
@@ -69,10 +68,6 @@ module ActiveSupport
         # to the Active Support legacy format.
         attr_accessor :use_standard_json_time_format
 
-        # If false, serializes BigDecimal objects as numeric instead of wrapping
-        # them in a string.
-        attr_accessor :encode_big_decimal_as_string
-
         attr_accessor :escape_regex
         attr_reader :escape_html_entities_in_json
 
@@ -118,7 +113,6 @@ module ActiveSupport
 
       self.use_standard_json_time_format = true
       self.escape_html_entities_in_json  = true
-      self.encode_big_decimal_as_string  = true
     end
   end
 end