diff --git a/Capabilities.md b/Capabilities.md
index e9ad5e3..8523fb4 100644
--- a/Capabilities.md
+++ b/Capabilities.md
@@ -1,6 +1,6 @@
 # Capabilities
 
-An overview from the mailing list archives - originally by [Feb 2009 - Brian Warner](http://allmydata.org/pipermail/tahoe-dev/2009-February/001110.html),
+An overview from the mailing list archives - originally by [Feb 2009 - Brian Warner](http://tahoe-lafs.org/pipermail/tahoe-dev/2009-February/001110.html),
 but updated to take into account literal caps and immutable directories:
 
 ```
@@ -22,7 +22,7 @@ but updated to take into account literal caps and immutable directories:
 
 13: unknown/future capability strings                     <anything else>
 
-In Tahoe-LAFS, directories are built out of mutable files (a directory is really
+In Tahoe-LAFS, mutable directories are built out of mutable files (a mutable directory is really
 just a particular way to interpret the contents of a given mutable file), and
 non-directory mutable files aren't used very much. All normal data files are
 uploaded into immutable files by default.