diff --git a/hgext/shelve.py b/hgext/shelve.py
--- a/hgext/shelve.py
+++ b/hgext/shelve.py
@@ -766,7 +766,7 @@ def _dounshelve(ui, repo, *shelved, **op
          [('A', 'addremove', None,
            _('mark new/missing files as added/removed before shelving')),
           ('u', 'unknown', None,
-           _('Store unknown files in the shelve')),
+           _('store unknown files in the shelve')),
           ('', 'cleanup', None,
            _('delete all shelved changes')),
           ('', 'date', '',
diff --git a/tests/test-shelve.t b/tests/test-shelve.t
--- a/tests/test-shelve.t
+++ b/tests/test-shelve.t
@@ -54,7 +54,7 @@ shelve has a help message
   
    -A --addremove           mark new/missing files as added/removed before
                             shelving
-   -u --unknown             Store unknown files in the shelve
+   -u --unknown             store unknown files in the shelve
       --cleanup             delete all shelved changes
       --date DATE           shelve with the specified commit date
    -d --delete              delete the named shelved change(s)