diff --git a/hgext/rebase.py b/hgext/rebase.py
--- a/hgext/rebase.py
+++ b/hgext/rebase.py
@@ -67,7 +67,7 @@ def _makeextrafn(copiers):
     ('e', 'edit', False, _('invoke editor on commit messages')),
     ('l', 'logfile', '',
      _('read collapse commit message from file'), _('FILE')),
-    ('', 'keep', False, _('keep original changesets')),
+    ('k', 'keep', False, _('keep original changesets')),
     ('', 'keepbranches', False, _('keep original branch names')),
     ('D', 'detach', False, _('(DEPRECATED)')),
     ('i', 'interactive', False, _('(DEPRECATED)')),
diff --git a/tests/test-rebase-scenario-global.t b/tests/test-rebase-scenario-global.t
--- a/tests/test-rebase-scenario-global.t
+++ b/tests/test-rebase-scenario-global.t
@@ -397,7 +397,7 @@ Source on have two descendant heads but 
   abort: can't remove original changesets with unrebased descendants
   (use --keep to keep original changesets)
   [255]
-  $ hg rebase -r '2::8' -d 1 --keep
+  $ hg rebase -r '2::8' -d 1 -k
   rebasing 2:c9e50f6cdc55 "C"
   rebasing 3:ffd453c31098 "D"
   rebasing 6:3d8a618087a7 "G"