diff --git a/kallithea/controllers/files.py b/kallithea/controllers/files.py
--- a/kallithea/controllers/files.py
+++ b/kallithea/controllers/files.py
@@ -94,7 +94,6 @@ class FilesController(BaseRepoController
                     category='warning')
             raise HTTPNotFound()
         except(ChangesetDoesNotExistError, LookupError), e:
-            log.error(traceback.format_exc())
             msg = _('Such revision does not exist for this repository')
             h.flash(msg, category='error')
             raise HTTPNotFound()
@@ -115,7 +114,6 @@ class FilesController(BaseRepoController
             if file_node.is_dir():
                 raise RepositoryError('given path is a directory')
         except(ChangesetDoesNotExistError,), e:
-            log.error(traceback.format_exc())
             msg = _('Such revision does not exist for this repository')
             h.flash(msg, category='error')
             raise HTTPNotFound()
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
@@ -463,10 +463,10 @@ class MercurialRepository(BaseRepository
         rev_spec = "%%s & %s(%%s)" % _revset_predicates[ref_type]
         try:
             revs = self._repo.revs(rev_spec, ref_name, ref_name)
-        except (LookupError, ):
+        except LookupError:
             msg = ("Ambiguous identifier %s:%s for %s" % (ref_type, ref_name, self.name))
             raise ChangesetDoesNotExistError(msg)
-        except (IndexError, ValueError, RepoLookupError, TypeError):
+        except RepoLookupError:
             msg = ("Revision %s:%s does not exist for %s" % (ref_type, ref_name, self.name))
             raise ChangesetDoesNotExistError(msg)
         if revs: