--- a/submitted/W3C/assertions.txt	Tue Jun 04 15:45:18 2013 +0200
+++ b/submitted/W3C/assertions.txt	Tue Jun 04 15:45:47 2013 +0200
@@ -1,7 +1,11 @@
 * The output of a MediaStream object MUST correspond to the tracks in its input.
 > Not clear how to test (or what it means)
 
-* Muted audio tracks MUST be replaced with silence. Muted video tracks MUST be replaced with blackness.
+* Muted audio tracks MUST be replaced with silence. 
+= disabled-audio-silence.html
+
+* Muted video tracks MUST be replaced with blackness.
+= disabled-video-black.html
 
 * MediaStream constructor algorithm