diff --git a/lib/jbuilder.rb b/lib/jbuilder.rb
index 10e4e95..ac4efc3 100644
--- a/lib/jbuilder.rb
+++ b/lib/jbuilder.rb
@@ -64,15 +64,6 @@ def initialize(*args, &block)
     options = args.extract_options!
     @key_formatter = options.fetch(:key_formatter, @@key_formatter.clone)
     @ignore_nil = options.fetch(:ignore_nil, @@ignore_nil)
-
-    # old-style initialization compatibility
-    if args.any?
-      @key_formatter = args.shift
-      @ignore_nil = args.shift if args.any?
-      ::ActiveSupport::Deprecation.warn 'Initialization with positioned ' +
-        'arguments is deprecated. Use hash syntax instead.'
-    end
-
     yield self if block
   end
 
diff --git a/test/jbuilder_test.rb b/test/jbuilder_test.rb
index 5eef777..56de888 100644
--- a/test/jbuilder_test.rb
+++ b/test/jbuilder_test.rb
@@ -457,14 +457,6 @@ def empty?
     assert_equal 50, parsed['relations'][1]['age']
   end
 
-  test 'initialize with positioned arguments (deprecated)' do
-    ::ActiveSupport::Deprecation.silence do
-      jbuilder = Jbuilder.new(1, 2)
-      assert_equal 1, jbuilder.instance_eval('@key_formatter')
-      assert_equal 2, jbuilder.instance_eval('@ignore_nil')
-    end
-  end
-
   test 'initialize via options hash' do
     jbuilder = Jbuilder.new(:key_formatter => 1, :ignore_nil => 2)
     assert_equal 1, jbuilder.instance_eval('@key_formatter')