diff --git a/index.src.html b/index.src.html
index 3da26074..66338334 100644
--- a/index.src.html
+++ b/index.src.html
@@ -1951,7 +1951,8 @@
     return `false`.
 2. If {{AudioDecoderConfig/description}} is [[=BufferSource/detached=]], return
      false.
-3. Return `true`.
+3. If {{AudioDecoderConfig/sampleRate}} or {{AudioDecoderConfig/numberOfChannels}} are equal to zero, return `false`.
+4. Return `true`.
 
 <dl>
   <dt><dfn dict-member for=AudioDecoderConfig>codec</dfn></dt>