diff --git a/README.md b/README.md
index c018dc0..72dff12 100644
--- a/README.md
+++ b/README.md
@@ -108,6 +108,8 @@ Order
 order: {_score: :desc} # most relevant first - default
 ```
 
+[All of these sort options are supported](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-sort.html)
+
 Limit / offset
 
 ```ruby
diff --git a/test/sql_test.rb b/test/sql_test.rb
index aa181cc..1242921 100644
--- a/test/sql_test.rb
+++ b/test/sql_test.rb
@@ -198,6 +198,10 @@ class TestSql < Minitest::Unit::TestCase
     assert_order "product", ["Product A", "Product B", "Product C"], order: {color: :asc, store_id: :desc}
   end
 
+  def test_order_ignore_unmapped
+    assert_order "product", [], order: {not_mapped: {ignore_unmapped: true}}, conversions: false
+  end
+
   def test_partial
     store_names ["Honey"]
     assert_search "fresh honey", []
--
libgit2 0.21.0