Index: changelog.py
===================================================================
--- changelog.py	(revision 5346)
+++ changelog.py	(working copy)
@@ -4,6 +4,7 @@
 from trac.wiki.macros import WikiMacroBase
 from trac.wiki.formatter import wiki_to_html
 from trac.util import format_datetime
+from trac.versioncontrol import RepositoryManager
 from StringIO import StringIO
 
 
@@ -31,7 +32,8 @@
         if 'CHANGESET_VIEW' not in req.perm:
             return Markup('<i>Changelog not available</i>')
 
-        repo = self.env.get_repository(req.authname)
+        rm = RepositoryManager(self.env)
+        reponame, repo, path = rm.get_repository_by_path(path, req.authname)
 
         if rev is None:
             rev = repo.get_youngest_rev()