--- a/ttml1/spec/ttml1-errata.html	Sun Sep 14 15:28:35 2014 +0200
+++ b/ttml1/spec/ttml1-errata.html	Sun Sep 14 15:50:50 2014 +0200
@@ -62,6 +62,8 @@
           (published 2014-07-31)</li>
       <li><a href="#errata-5.2-1">Correction in TTML1 Section 5.2 Profiles</a>
           (published 2014-01-30)</li>
+      <li><a href="#errata-6.1.5-1">Correction in TTML1 Section 6.1.5 Profiles</a>
+          (published 2014-09-14)</li>
       <li><a href="#errata-8.2.7-1">Correction in TTML1 Section 8.2.7 tts:extent attribute</a>
           (published 2014-07-17)</li>
       <li><a href="#errata-8.2.16-1">Correction in TTML1 Section 8.2.16 tts:padding attribute</a>
@@ -108,6 +110,14 @@
     <p>Change "... and must not <span class="diff-del">be </span>appear ..."</p>
     <p>to read "... and must not appear ...".</p>
     <hr />
+    <p id="errata-6.1.5-1">Correction
+        in <a href="http://www.w3.org/TR/2013/REC-ttml1-20130924/#parameter-vocabulary-extension">TTML1 Section 6.1.5 ttp:extension</a> (published 2014-09-14) </p>
+    <p class="description"><span class="title-description">Description</span>:</p>
+    Minor typographical error, in the second paragraph under XML Representation - Element Information Item ttp:extension.
+    <p class="description"><em><strong><span class="title-correction">Resolution</span></strong></em>:</p>
+    <p>Change "... of the <code>ttp:feature</code> element ..."</p>
+    <p>to read "... of the <span class="diff-chg"><code>ttp:extension</code></span> element ...".</p>
+    <hr />
     <p id="errata-8.2.7-1">Correction
         in <a href="http://www.w3.org/TR/2013/REC-ttml1-20130924/#style-attribute-extent">TTML1 Section 8.2.7 - tts:extent attribute</a> (published 2014-07-17) </p>
     <p class="description"><span class="title-description">Description</span>:</p>