diff --git a/tests/results.txt b/tests/results.txt
index 983d5549c..863df4c4e 100644
--- a/tests/results.txt
+++ b/tests/results.txt
@@ -203,3 +203,4 @@ T_354h264_60000_1001i_def_duration_60000_1000:3588de4a68a60301c05c0e96ec1499e8:p
 T_355chapters:aff1c812e628ee6c1dc11f8b48d8b472-fe1f0f4bc6fea73176105ec2ed297fd5-89bf21b148f8bd2cb0d36a975ec1ce31-ok-ok-ok-ok-ok-ok-ok-ok-ok-ok-ok-ok:passed:20120324-121601:0.218524938
 T_356tags:50b0db97dc1c571a2ae5688614cb0a39-44bd89109f3414e90b84b58b73536133-2718d3a6e7d380df11d0bcdf176cfacf-52b632167e9dadb0779f239bf0c4b82a-ok-ok-ok-ok-ok-ok-ok-ok-ok-ok-ok-ok-ok:passed:20120324-121752:0.210298216
 T_357segment_info:2d71cf1bd5f76518c50cd264c9bbca02-14d5941c82657b7b39cb9c1f93bf39b4-ok-ok-ok-ok-ok-ok-ok:passed:20120324-122844:0.171732152
+T_358usf:7b400881e4e660b2f1048fdc7536927e:passed:20120329-142144:0.03867509
diff --git a/tests/test-358usf.rb b/tests/test-358usf.rb
new file mode 100644
index 000000000..0b92d8567
--- /dev/null
+++ b/tests/test-358usf.rb
@@ -0,0 +1,6 @@
+#!/usr/bin/ruby -w
+
+# T_358usf
+describe "mkvmerge / USF subtitles"
+
+test_merge "data/subtitles/usf/u.usf"