--- a/docs/user-guide.rst	Sat Apr 27 14:42:48 2019 -0400
+++ b/docs/user-guide.rst	Sat Apr 27 19:32:03 2019 -0400
@@ -288,7 +288,7 @@
 
 ``prune`` (example 4 above) is the simplest history modification
 command provided by ``evolve``. All it does is mark the specified
-changeset(s) obsolete, with no successor/precursor relationships
+changeset(s) obsolete, with no successor/predecessor relationships
 involved. (If the working directory parent was one of the obsoleted
 changesets, ``prune`` updates back to a suitable ancestor.)