diff --git a/mercurial/obsolete.py b/mercurial/obsolete.py
index 4c28ddda5d481886157f52bb2fce7928435d4892_bWVyY3VyaWFsL29ic29sZXRlLnB5..02c150850e162a853f1d266eae3632e63fb016bb_bWVyY3VyaWFsL29ic29sZXRlLnB5 100644
--- a/mercurial/obsolete.py
+++ b/mercurial/obsolete.py
@@ -42,5 +42,5 @@
 
     (A, ())
 
-- When changeset A is split into B and C, a single marker are used:
+- When changeset A is split into B and C, a single marker is used:
 
@@ -46,5 +46,5 @@
 
-    (A, (C, C))
+    (A, (B, C))
 
   We use a single marker to distinguish the "split" case from the "divergence"
   case. If two independent operations rewrite the same changeset A in to A' and