diff --git a/spec/ttml2.xml b/spec/ttml2.xml
index 03593dd37..48f06c794 100644
--- a/spec/ttml2.xml
+++ b/spec/ttml2.xml
@@ -9678,6 +9678,11 @@ as determined above effectively becomes the value of
In the case of any other element E
E
E
The semantics described above correspond to the direction
property as defined by #direction