diff --git a/index.bs b/index.bs
index 28cbae5b..98f520ea 100644
--- a/index.bs
+++ b/index.bs
@@ -1733,7 +1733,7 @@ The figure below shows an example of an [=IA Sequence=].
 A set of [=Descriptors=] SHALL be placed in the following order regardless of where they appear in the bitstream:
 
 1. One [=IA Sequence Header OBU=]
-2. One [=Codec Config OBU=]
+2. All [=Codec Config OBU=]s
 3. All [=Audio Element OBU=]s
 4. All [=Mix Presentation OBU=]s