diff --git a/kallithea/lib/vcs/backends/base.py b/kallithea/lib/vcs/backends/base.py
--- a/kallithea/lib/vcs/backends/base.py
+++ b/kallithea/lib/vcs/backends/base.py
@@ -171,7 +171,7 @@ class BaseRepository(object):
         :param start_date:
         :param end_date:
         :param branch_name:
-        :param reversed:
+        :param reverse:
         """
         raise NotImplementedError
 
diff --git a/kallithea/lib/vcs/backends/hg/repository.py b/kallithea/lib/vcs/backends/hg/repository.py
--- a/kallithea/lib/vcs/backends/hg/repository.py
+++ b/kallithea/lib/vcs/backends/hg/repository.py
@@ -528,7 +528,7 @@ class MercurialRepository(BaseRepository
         :param start_date:
         :param end_date:
         :param branch_name:
-        :param reversed: return changesets in reversed order
+        :param reverse: return changesets in reversed order
         """
         start_raw_id = self._get_revision(start)
         start_pos = None if start is None else self.revisions.index(start_raw_id)