diff --git a/test/test_filters.rb b/test/test_filters.rb
index 80eb333d..557c6734 100644
--- a/test/test_filters.rb
+++ b/test/test_filters.rb
@@ -98,7 +98,7 @@ class TestFilters < Test::Unit::TestCase
         end
 
         should "format a time with xmlschema" do
-          assert_equal "2014-05-10T00:10:07Z", @filter.date_to_xmlschema(@time_as_numeric)
+          assert_match /2014-05-10T00:10:07/, @filter.date_to_xmlschema(@time_as_numeric)
         end
 
         should "format a time according to RFC-822" do