diff --git a/testfiles/matroska_wave1-test3.json b/testfiles/matroska_wave1-test3.json
index f13c387..06555d7 100644
--- a/testfiles/matroska_wave1-test3.json
+++ b/testfiles/matroska_wave1-test3.json
@@ -40,6 +40,6 @@
             }
         ],
         "formatSummary": "H.264-576p / MP3-2ch-eng",
-        "duration": "00:00:00"
+        "duration": "00:00:49.064"
     }
 ]