diff --git a/index.bs b/index.bs
index fa27711..3c779cf 100644
--- a/index.bs
+++ b/index.bs
@@ -325,7 +325,7 @@ The <dfn noexport>version</dfn> field indicates the version of the AV1CodecConfi
 
 <assert>The <dfn export>high_bitdepth</dfn> field SHALL be equal to the value of high_bitdepth flag from the [=Sequence Header OBU=].</assert>
 
-<assert>The <dfn export>twelve_bit</dfn> field SHALL be equal to the value of the twelve_bit flag from the [=Sequence Header OBU=]. <assert>When twelve_bit is not present in the [=Sequence Header OBU=] the AV1CodecConfigurationRecord twelve_bit value SHALL be 0.</assert>
+<assert>The <dfn export>twelve_bit</dfn> field SHALL be equal to the value of the twelve_bit flag from the [=Sequence Header OBU=].</assert> <assert>When twelve_bit is not present in the [=Sequence Header OBU=] the AV1CodecConfigurationRecord twelve_bit value SHALL be 0.</assert>
 
 <assert>The <dfn export>monochrome</dfn> field SHALL be equal to the value of the [=mono_chrome=] flag from the [=Sequence Header OBU=].</assert>