diff --git a/hgext/rebase.py b/hgext/rebase.py
--- a/hgext/rebase.py
+++ b/hgext/rebase.py
@@ -204,6 +204,7 @@
         self.keepbranchesf = opts.get(b'keepbranches', False)
         self.obsoletenotrebased = {}
         self.obsoletewithoutsuccessorindestination = set()
+        self.obsoleteextinctsuccessors = set()
         self.inmemory = inmemory
         self.stateobj = statemod.cmdstate(repo, b'rebasestate')
 
@@ -357,11 +358,11 @@
         (
             self.obsoletenotrebased,
             self.obsoletewithoutsuccessorindestination,
-            obsoleteextinctsuccessors,
+            self.obsoleteextinctsuccessors,
         ) = _computeobsoletenotrebased(self.repo, obsoleteset, destmap)
         skippedset = set(self.obsoletenotrebased)
         skippedset.update(self.obsoletewithoutsuccessorindestination)
-        skippedset.update(obsoleteextinctsuccessors)
+        skippedset.update(self.obsoleteextinctsuccessors)
         _checkobsrebase(self.repo, self.ui, obsoleteset, skippedset)
 
     def _prepareabortorcontinue(self, isabort, backup=True, suppwarns=False):
@@ -576,6 +577,7 @@
         elif (
             not allowdivergence
             and rev in self.obsoletewithoutsuccessorindestination
+            and rev not in self.obsoleteextinctsuccessors
         ):
             msg = (
                 _(
diff --git a/tests/test-rebase-obsolete.t b/tests/test-rebase-obsolete.t
--- a/tests/test-rebase-obsolete.t
+++ b/tests/test-rebase-obsolete.t
@@ -1538,9 +1538,8 @@
   1 new obsolescence markers
   obsoleted 1 changesets
   $ hg tag --local --remove E
-BROKEN: this rebase would not cause divergence
   $ hg rebase -d D -s C
-  note: not rebasing 3:26805aba1e60 "C" (C) and its descendants as this would cause divergence
+  rebasing 3:26805aba1e60 "C" (C)
 
   $ cd ..