--- a/docs/obs-terms.rst	Thu Sep 13 17:34:29 2012 -0400
+++ b/docs/obs-terms.rst	Wed Sep 12 18:05:44 2012 -0400
@@ -85,7 +85,7 @@
 |                     |                          | one non-obsolete descendant |
 |                     |                          |                             |
 |                     |                          | Thoses descendants prevent  |
-|                     |                          | properties of extincts      |
+|                     |                          | properties of extinct       |
 |                     |                          | changesets to apply. But    |
 |                     |                          | they will refuse to be      |
 |                     |                          | pushed without --force.     |