diff --git a/core/tests/swfs/avm1/sound/output.txt b/core/tests/swfs/avm1/sound/output.txt
index 0160e2baa..79606af89 100644
--- a/core/tests/swfs/avm1/sound/output.txt
+++ b/core/tests/swfs/avm1/sound/output.txt
@@ -6,6 +6,9 @@ left-to-right:  0
 right-to-left:  0
 right-to-right: 100
 
+sound.duration: undefined
+sound.getDuration(): undefined
+
 Sound.setVolume(50.5)
 volume:         50
 pan:            0
diff --git a/core/tests/swfs/avm1/sound/test.fla b/core/tests/swfs/avm1/sound/test.fla
index d045ea227..398d9f6bf 100644
Binary files a/core/tests/swfs/avm1/sound/test.fla and b/core/tests/swfs/avm1/sound/test.fla differ
diff --git a/core/tests/swfs/avm1/sound/test.swf b/core/tests/swfs/avm1/sound/test.swf
index 4501b53d3..af0fa2cfa 100644
Binary files a/core/tests/swfs/avm1/sound/test.swf and b/core/tests/swfs/avm1/sound/test.swf differ