diff --git a/htdocs/Tibetan51Errata.html b/htdocs/Tibetan51Errata.html
index e57e721..77b550f 100644
--- a/htdocs/Tibetan51Errata.html
+++ b/htdocs/Tibetan51Errata.html
@@ -134,7 +134,7 @@
     The 'greng-bu vowel glyphs listed for TibetanMachineWeb2.112
     through TibetanMachineWeb2.126, inclusive, and
     TibetanMachineWeb3.33 through TibetanMachineWeb3.44, inclusive,
-    are incorrect.  These should be [0, 124], not [0, 125].
+    are incorrect.  These should be [0, 124], not [0, 125].
   </li>
 
   <li>
@@ -145,8 +145,15 @@
 
   <li>
     The 'greng-bu vowel glyphs listed for TibetanMachineWeb6.58,
-    TibetanMachineWeb6.59, and TibetanMachineWeb6.60 are incorrect.
-    These should be [0, 123], not [0, 125].
+    TibetanMachineWeb6.59, and TibetanMachineWeb6.60 are
+    incorrect.&nbsp; These should be [0, 123], not [0, 125].
+  </li>
+
+  <li>
+    TibetanMachineSkt4.135/TibetanMachineWeb9.40 is yar.tshes.tags,
+    U+0F3E, not mar.tshes.tags, U+0F3F.&nbsp: Similarly,
+    TibetanMachineSkt4.134/TibetanMachineWeb9.39 is mar.tshes.tags,
+    U+0F3F, not yar.tshes.tags, U+0F3E.
   </li>
 </ul>